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Logical Weakness / Anime & Manga

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Logical Weaknesses in anime and manga.


  • In Aldnoah.Zero, Trillram pilots a mecha with an energy shield that disintegrates anything that touches it. However, this comes with the disadvantage of blocking out all light, forcing the pilot to rely on remote sensors for guidance. Also, by necessity, there are gaps in the field to allow the mech to walk without falling through the ground, and to be able to receive the feed from his sensor drones. The protagonists exploit these vulnerabilities to great effect.
    • This is how the Earth forces, armed with fairly standard mechs with conventional weaponry manage to keep up with the Martians' more esoteric attacks. For instance, a Rocket Punch is deflected with a pinpoint-accurate shot to deflect its momentum, and a mech armed with plasma swords is dumped in the ocean - the heat causes a tremendous steam explosion that vaporizes the mech instantly.
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    • Another excellent use of logic on the part of the Terrans came when a Martian with what amounted to a laser sniper rifle on his mech took the high ground and could bring down anything within hundreds of miles of him. Then, with the help of a spotter on the ground closer to him, a Terran battleship hits him with conventional rounds. He knows exactly where the shot came from and fires back ...and the laser goes over the ship. Lasers are just light when you get right down to it and light travels in a straight line,note  so the Earthlings just had to fire at him with shells on a ballistic trajectory (arcing, e.g., not in a straight line) from beyond the curvature of the Earth relative to him and he can't hit them back.
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  • In Angelic Layer, Hikaru is created to be super fast and agile. The problem is that because she is so light, she doesn't have very much strength. She's also unable to fight well on places like an ice field.
  • In Anpanman, the bread-headed superheroes have water and mold as their weakness, seeing as they both make bread soggy and inedible. Baikinman and his Kabirunrun, being an alien bacterium and mold spores respectively, have soap and cleanliness as their weaknesses, with Mushibakinman, a cavity germ of the same species as Baikinman having a weakness to toothpaste. Also, the donburi-headed characters, being bowls of rice with a topping, lose all their powers if their bowls are emptied. Finally, Kurayamiman and the Ice Queen, being darkness and ice incarnate, both are weak against the sunlight.
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  • Assassination skills in Assassination Classroom are for getting the drop on a target, not prolonged conflict, making most assassins far less effective at combat than their general competence level would suggest. Infiltration-style assassins like Irina lose most of their effectiveness once their cover is blown.
  • The Dragonslayer in Berserk is one of the few non-magic weapons that can kill Apostles (the other few being cannonballs and explosives) with relative ease in short time. It works on the physics of swinging an eight foot tall slab of five hundred pounds of iron into someone until it dies, meaning only someone as absurdly strong as Guts can wield it, and if you don't have the considerable room necessary to swing the damned thing, it becomes a liability rather than an asset.
  • Black Clover:
    • Asta has several:
      • Asta's biggest weakness is the fact that his abilities rely and take a heavy toll on his body which, aside from being well trained, is still only a human body. When not going into his Black form, he is physically only on the level of a well trained human and is basically just a regular swordsman battling monsters and things that are physically beyond human. Even with his swords Anti-Magic properties and being able to deflect or block magic, it's all still backed up by a human body that can't take lots of punishment before it starts to shut down. This weakness still comes into play with his Black form engaged because his power only enshrouds and reinforces his body but doesn't imbue it with any special properties like a Healing Factor or Nigh-Invulnerability. Basically, think Tony Stark in the Iron Man armor. Sure it makes him way stronger and protects him while giving him extra abilities but it's still just a human being inside.
      • He is entirely reliant on the surface area of his sword for blocking attacks. He can't block the attack if it's too fast for him to bring his sword into the firing path, a fact that Mars uses to beat Asta.
      • The sword Nero shows him when he's on the ropes is smaller and lighter, meaning he can swing it fast enough to parry Mars's attacks. However, since it's smaller he can't hit Mars hard enough to overcome Mars's Recovery Magic.
      • He's useless if his arms are restrained, but he came up with a solution to this by summoning his sword from the book directly to break any magical restraints before beginning to dual-wield.
      • The swords are also limited to how long they are, making it difficult to hit a swift, flying target, especially when Asta's already bleeding and running on empty.
    • Kaiser Granvorka's Vortex Magic relies on mana detection to dissipate enemies' attacks. Fuegoleon is able to slip through it by erasing his magic and using Salamander as a decoy to defeat the elf possessing him.
    • Kyle, a minor member of the Silver Eagles, uses Feather Magic, which naturally doesn't fare too well against Flame Magic.
    • Licht's magic is super-heated and super-intense light, meaning that even though he's extremely powerful, Gauche defeats him in their first encounter by just summoning a giant mirror and reflecting his own light laser back at him.
    • Vetto's monstrous strength comes from a number of enhancement spells casted on himself. Find a way to remove all that from him at once and he's completely helpless, which is what happens when Asta manages to land a solid hit on him with the Demon-Dweller Sword.
    • Lira fights entirely with magical constructs. When Charmy manifests her dwarf heritage, she gains Food Magic, allowing her to consume magic. As a result, she literally eats everything he throws at her.
    • Due to the nature of the Glamour World, while Reve's able to use her magic for her own benefit, it can be used against her as well. This is how Dorothy is summoned to the Glamour World. Because it's just as much Dorothy's dream as it is Reve's, she can't just nullify Dorothy like she could her other dream creations.
    • It's much harder for blood to coagulate underwater. As a result, Vanica's Blood Magic is half as effective in water, making her fight against Lolopechka and Noelle all the more challenging, not that she minds.
    • Svenkin Gatard's Skin Magic adjusts itself to cancel out magic attributes. However, True Magics create the real element itself as opposed to being made of mana. Luck using True Lightning Magic to become a piercing lightning bolt breaks through his defense and defeats him.
  • Bleach:
    • Aizen's zanpakuto can completely control the perceptions of anyone who sees him release it even once. It thus stands to reason that Tousen, a blind captain, who cannot see it, must be recruited to his side, and Ichigo is at an advantage over him, never having seen him release his zanpakuto. Also, Yamamoto's flame shikai and bankai can not be tricked by illusions, so that's why Aizen won't confront him head on. In fact, Yamamoto's plan to counter Aizen was quite literally Kill It with Fire by basically nuking the entire area - it doesn't matter if he can't see Aizen, he knows Aizen is somewhere close, and hence within the blast zone. Without Wonderweiss it might very well have worked.
    • Shinji's Zanpakuto Sakenade is somewhat like Aizen's in that it messes with perception (in his case, he can reverse directions, so up is down, left is right, vice is versa, and so on), and Bambietta takes advantage of the same weakness that Yamamoto did with Aizen- even if she can't find Shinji, she knows he's somewhere in the area, and her Having a Blast power is omnidirectional, so she can just make everything explode and be sure she's hit Shinji somewhere.
    • Izuru Kira's zanpakuto Wabisuke makes anything struck by it become twice as heavy, with the effect being cumulative- if he hits something three times, it will weigh 8 times as much. However, the extra weight can be used against him, as Matsumoto demonstrates in a filler arc by tricking a reigai duplicate of Kira into hitting a steel rod multiple times and then dropping it on Wabisuke; Reigai!Kira is just as unable to move the rod as Matsumoto would be. It's also completely useless against something that is actually weightless (like Matsumoto's own zanpakuto Haineko; its shikai form floats in the air) — zero doubled is still zero.
    • Zommari's Amor power allows his eyes to control anything they see. However, 'thing' is singular — he can only take control of one thing per eye (so if he gets someone's left hand, the eye he's using for that can't control any other part of their body, although he can seize control of an entire body if he gets the head of his victim). If there are more threats than he has eyes (like Byakuya's bankai- he only has 50 eyes, so he can only take control of at most 50 petals out of the millions said bankai creates), his opponent is free to toast him with the remaining attacks. His ability is also similar to kido, so it can be blocked using a kido barrier.
    • Baraggan Luisenbarn is a Walking Wasteland, projecting an aura that rapidly ages everything around him. Since it's always turned on, Baraggan has to constantly protect himself from his own aura. This proves fatal for Baraggan when a rapidly-decomposing object is placed where he cannot protect himself — namely, inside of his body.
    • Byakuya's shikai and bankai manifest as a massive number of tiny razor blades that shred his opponent. However, said blades can also cut him so they always stay a certain distance away from him, thus anyone who can close the gap will make Byakuya have to choose between being unable to hit his opponent or risking hitting himself.
    • Kyoraku's shikai involves playing children's games with his opponent, making them have to follow the rules in order to deal damage. But because they're games, he (and presumably any nearby allies) has to play too, and any opponent who can quickly get the hang of playing life-or-death tag/rock-paper-scissors/Calvinball can use the games against him to hurt him more than they could in regular combat.
    • Moe Shishigawara's Fullbring is probability-based, and usually guarantees that he hits the jackpot with very powerful attacks right away. However, as a result of that, he's increasingly less likely to get a lucky hit as a fight goes on. His first punch against Ikkaku is strong enough to break Hozukimaru, but they get weaker and weaker from there.
    • Guenael Lee's 'Vanishing Point' power allows him to erase himself from others' memory at will, meaning that potential opponents won't remember why they were fighting. Then he tries it on Yachiru, who's such a Blood Knight that her first instinct to someone she doesn't know appearing out of nowhere is to immediately attack, rendering his defense useless- no matter how often he erases her memory, she'll continue to hit him every time she sees him.
    • Gremmy has the power to make anything he imagines real. Overpowered as all get out? Hell yes, but it has one big problem: it also makes his doubts real. When he fights Kenpachi, he might have been able to defeat him, but Kenpachi's sheer strength in battle made Gremmy fear that he was an unbeatable monster, so Kenpachi promptly became one. He also suffers a Superpower Meltdown when he tries to imagine something happening that he's already imagined to be impossible. In this case, he tried to imagine that he was stronger than Kenpachi. However, since he was already convinced that Kenpachi was invincible, he was essentially trying to imagine himself stronger than infinity, which resulted in him exploding in a rather gory Puff of Logic.
    • Pernida has, among other powers, the ability to absorb powers by consuming their owners. However, in doing so he absorbs any weakness or Blessed with Suck tendencies. He is defeated when he tries to absorb Nemu, but fails to get her brain. Nemu has a Healing Factor so powerful that without her brain, which serves as a Power Limiter, the regeneration would take over her whole body and turn it into a mass of cancer. Which is exactly what happens to Pernida when he absorbs her.
    • Yhwach's power as "The Almighty" allows him to see all possible outcomes of any event he focuses on, and to counter anything he can see. However, the "see" in this is quite literal, as the power functions entirely through his eyes. Thus, he's just as vulnerable as anyone else to Aizen's perfect illusions, which leave him seeing fake possible futures. He can also only see the future, leaving him vulnerable to Tsukishima's ability to change the past.
  • Many of the Clow Cards from Cardcaptor Sakura have logical weaknesses. One example: Sakura managed to capture the Watery card by trapping it in an industrial-sized freezer.
  • A Certain Magical Index:
    • Accelerator is practically invincible due to his power — changing any vector he wants. He can easily deflect bullets, kill someone by reversing their bloodflow, turn air into plasma bombs, et cetera. However, he has to actually mentally perform all the relevant calculations to do any of this. Brain damage all but cripples his abilities. He has also learned not to stand in the middle of gigantic explosions, as the fire tends to consume all the oxygen around him. This is also true in regards to fighting an enemy who uses electricity and could therefore, in theory, turn all the air around Accelerator into ozone long enough for him to suffocate, as one Misaka-imouto figures out. After all, complete invincibility to external attacks doesn't mean much if you can't breathe. Although, he says he could get around this by simply carrying around a small air canister. As of New Testament, he cannot deflect Hollywood Voodoo because there are no vectors to redirect.
    • Subverted with Touma's Imagine Breaker, which annihilates anything supernatural it comes into contact with... quite a Game-Breaker when up against sorcerers and espers. However, the power is confined to only his right hand. Therefore, if one were to sever his right hand, the ability would be nullified, no? Well, yes, the Anti-Magic effect would be gone, but it turns out the Anti-Magic is merely a side-effect of Imagine Breaker's power: its real purpose is to be the lock on some sort of Eldritch Abomination within Touma that is released if his hand is ever cut off. Said being is also one of the strongest entities shown so far. Chances are, if you were having trouble with a magic-cancelling right hand, you're not powerful enough to deal with that. Imagine Breaker is also of no use against people and items that are not supernatural; he often has to run away when he faces opponents with guns.
    • Acqua of the Back is a monstrously strong fighter, due to being simultaneously a Saint (someone born with a similar body to Jesus, granting them incredible power through the Law of Similarity), a member of God's Right Seat (meaning he has altered his body to similarly invoke the Archangel Gabriel), and a skilled user of magic. These powers would normally be mutually exclusive if not for his particular saint traits also including a connection to Mary, the Saint of Mercy. However, this status as a "double saint" means that when struck by the experimental Saintbreaker (a spell which replicates the Crucifixion), his conflicting powers go out of control and he explodes.
    • Leivinia Birdway's method of casting spells centers around movements she makes over and over again until the movements themselves become magical symbols. While this means that every movement she makes would increase the power of the associated spell, it also means Leivinia can't vary her tactics or improvise in any way, since the resultant spell would be weaker than the ones she has already.
    • Fiamma of the Right's power, the Holy Right, gets its strength from the malice of his opponents. This means he is powerless if no one around him feels hate and is weaker when facing people with goodness in their hearts, something Touma points out when he realizes this is the reason why Fiamma couldn't simply wipe out the human race; humanity isn't as wicked as Fiamma believed.
    • Terra of the Left has the ability to alter the "precedence" of objects, which in practice allows him to make something like grains of flour strong enough to cut through solid rock or make himself intangible. But to use his powers, Terra has to declare one object higher and one object lower, and the resultant precedence only applies to those specific items. During their fight, Touma blocks one of his attacks with a discarded shotgun, something Terra didn't include in his new precedence.
    • Kakeru Kamisato's power, World Rejecter, allows him to banish anyone who feels weariness, doubt, and/or dissatisfaction with the world to a pocket dimension. He's powerless to affect anyone who is happy and satisfied with the world. Also, when he eventually feels negative about the world, World Rejecter ends up banishing him.
  • In Code Geass R2, Suzaku was able to exploit his instinctive fighting style and his Geassed command to "live" to be able to maneuver the Lancelot Albion so fast that Bismarck's Geass, that lets him see a few seconds into the future, still cannot provide enough of a head start to counter it.
    • Lelouch can make anyone follow an order of his as long as can look his opponent eye-to-eye (he can use mirrors, but he has to be able to see the actual eye). Mao is able to circumvent this by wearing shades.
    • Mao himself can read the minds of anyone within five hundred meters of him, but without his headphones, he'll buckle under the weight of under so many minds.
    • Rolo's Geass allows him to temporarily stop the senses of anyone in an immediate area. But it only applies to senses. Physical phenomena (like bullets already in flight) keep going.
  • Darker Than Black loves this. The guy with electricity powers needs something that conducts electricity if he wants to attack at a distance, the guy who can freeze stuff needs water (or your arm) within reach to be able to do anything, and in the first episode of the second season, someone with Super Speed who tries to run in a rainstorm winds up riddled with holes due to elementary physics.
  • In Darwin's Game, Kaname has the Fire God's Gavel sigil that lets him create things out of thin air. It sounds amazing, but has its limitations. He cannot create things that are too large — like a car, nor can he create anything too complex that fulfills multiple purposes — like a smartphone. He also can only create objects that he has handled before. If he doesn't know it, he can't create it.
  • Date A Live: Miku Izayoi's voice won't be able to brainwash someone if they can't hear it. Likewise, since her powers comes from her vocal chords, she would be rendered helpless if her mouth is covered, as shown when one of Kurumi's clones dragged her into the shadow during their battle.
  • In Deadman Wonderland, the titular Deadmen each have a unique method of controlling their own blood and turning it into a weapon. But they still also need their blood to carry oxygen through their body, just like a normal human would. Most of them create some sort of melee weapon with their blood and thus can just draw it back into their body when they're done with it. But main protagonist Ganta's power is to fire his blood as bullets. This is one of the most powerful of the "Branches of Sin", but since it doesn't allow him to reuse his blood he'll pass out from the blood loss if he fires too many shots. This is exacerbated by the fact that Ganta is still a child and is fairly scrawny, meaning that he has a lower volume of blood to work with in the first place than the various adult Deadmen.
  • Dragon Ball:
    • Guldo can stop time for as long as he holds his breath. Naturally, overusing his power strains his respiratory system until he can only keep time frozen for a couple seconds at best.
    • Android 16 both exploits it and falls victim to it. His fully mechanical nature gives him an edge against Cell that no other member of the cast has, since Cell cannot just absorb him for an easy win. Unfortunately, once Cell evolves into a higher form, 16 can no longer match him in combat, and since he's a robot, he can't train himself to grow stronger like the rest of the cast.
    • Monster Carrot can turn anyone he touches into carrots, but has to actually touch them to do so. Goku gets around it by beating him senseless with the Power Pole.
    • Babidi manages to keep Majin Buu under control by repeatedly threatening to seal him away again. When Buu inevitably turns on him, the very first thing he does is strangle him; after all, Babidi can't recite the incantation to seal Buu away again if he can't speak.
    • Due to their large ears, Namekians has super-hearing. As revealed in Lord Slug, this makes them sensitive to high-pitched noises like whistling. The heroes exploit this when Slug assumes his giant form, making his eardrums the size of trash can lids; the sound incapacitates Slug with pain. Piccolo gets around it by ripping off his own ears so he can't hear it.
    • The Solar Flare technique blinds the opponent with a bright flash of light. It can be countered by simply wearing sunglasses. As shown during the Universe Survival Saga of Dragon Ball Super, it also doesn't work if the opponent is blind.
    • Assimilating others helps Super Buu grow stronger by gaining their powers, abilities, and memories. However, this also forces Buu to absorb their weaknesses, too — both physical and mental. When he absorbed the Grand Supreme Kai in the distant past, Buu's magical power was increased but he also became less evil since the Grand Supreme Kai's gentle nature clashed with the original Buu's unrestrained savagery.note  His absorption of Gotenks gave him a major power boost, but that only lasted as long as their fusion limit, at which point he was left with the far weaker Goten and Trunks.
    • As powerful as Majin Buu's Healing Factor is, it's not flawless. If constantly pressured with powerful attacks, his regeneration weakens since it takes more power and focus to heal from them, especially if the attacks are constantly occurring. This is seen in Super Buu's fight with Vegito, and Goku's fight with Kid Buu; Vegito beats Super Buu so brutally that his regeneration actually starts failing and leads him to forget to regrow some parts of his body, while Kid Buu endured so many powerful attacks from Goku that he ended up regenerating his head between his legs. Essentially, to defeat Buu, one has to pressure him to the point he can't regenerate fast enough.
    • Dragon Ball Super gives us Ultra Instinct, a state that can be considered the ultimate expression of Don't Think, Feel, which allows a fighter to dodge pretty much any attack reflexively. The drawback is that it's almost entirely defense-oriented; as Whis explains, a fighter still needs to think when they attack, giving consideration to things like how much force to use and where to strike. Goku finds a sort of work-around while fighting Kefla, letting his body dodge her attacks while he concentrates on charging a Kamehameha, firing it off when he gets right up in her face. On a lighter note, Ultra Instinct is based around avoiding actual danger. If there's an environmental hazard that would just be annoying and/or embarrassing without being harmful, it will be ignored, as Whis inadvertently demonstrates by stepping in poop when showing off Ultra Instinct to Goku and Vegeta.
  • In Et Cetera, the Eto Gun and the Zodiac use various essences to fire bullets, which are based off of the Chinese Zodiac and the constellations, respectively. For example, you would need something from a cow to fire an Ox bullet, a fish to fire a Pisces bullet, etc. If there's no essence available, the guns are little better than the toys they resemble, being unable to fire.
    • Speaking of the Pisces bullet, it's created with essence from a fish, so it only works in the water. Unless the essence came from a flying fish.
  • Eyeshield 21:
    • Kongo Agon has a reaction time that is close from inhuman, making him nearly impossible to shake off since he will always be the first to move. However to react he needs to see which allowed The Hero to smack him down from a blind spot.
    • Sena, the protagonist, can outrun most of his opponents in a straight dash, but he slows down and sometimes stops when changing directions, so opposing players need only to force him to turn in order to catch him. One of his techniques allowed him to avoid being tackled by making it look like he froze in time because of a sudden backstep and suddenly running at full speed after avoiding the opponent, but his opponent deduced that by speeding up the moment Sena backsteps, he'll be able to catch him. While Sena found ways to overcome these weaknesses, the sole weakness he could not overcome is the simple fact that there is somebody that he cannot outrun.
  • Fairy Tail:
    • Wendy Marvel, the Sky Dragon Slayer, can eat air (this is not the same as breathing) to increase her strength and heal herself. While she is potentially invincible, since unlike other Dragon Slayers, her element is everywhere, she'll get sick if she tries this when the air is polluted.
    • One of the antagonists, Cobra, both subverts and plays it straight with one of his strongest abilities: Telepathy. Since he can hear another's thoughts, you'd be forgiven if you thought it could be stopped by thinking different from what you're really gonna do or flooding your mind with multiple thoughts to confuse him. Nope, turns out he's aware of both those problems. However, it is rendered useless if his opponent isn't aware of those thoughts themselves. In other words, if his opponent attacks without thinking entirely, or rather, fights instinctively, he can't predict their actions. It also doesn't work on those who have no memory. Since he hears thoughts, he's also vulnerable to someone thinking in a misleading way; he's able to hear Natsu think about the "Fire Dragon's Roar" and an attack Cobra couldn't escape, making him think that Natsu was going to use his Breath Weapon (which he calls Fire Dragon's Roar), but Natsu was actually planning to exploit the fact that Cobra's power is based on extraordinarily fine hearing by literally roaring loud enough to knock Cobra out from the overload.
    • From the same arc, Midnight's Reflector magic is a clear example of winning the Super Power Lottery, being able to reflect attacks, turn the scenery and the enemy's weaponry against them, and create illusions by bending light. When Erza fights him, her armors and sword are useless, but she quickly figures out three major weaknesses — he can only manipulate one area at a time (so if he's trying to throttle her in her own armor he has to dodge her attacks the old-fashioned way), he can't reflect human bodies (so he can't reflect his way out of Good Old Fisticuffs), and his reflection power is useless on something that's naturally elastic (like Erza's Robe of Yuen), since it will just stretch and then return to its regular shape.
    • When Gray fights Sugarboy, who has the ability to make things softer, his Ice Make power is for the most part useless because Sugarboy can soften the ice up to the point where it's basically water. However, he can't change any other properties, so he can't make an ice-coated floor not be slippery. He also has to be careful with using his powers around an item he doesn't want to destroy (like the key he and Gray were fighting over), because he could accidentally soften it up too. Gray, meanwhile, doesn't have to bother protecting the key, because he can just copy it with Ice Make.
    • When Elfman fights Bacchus in the Grand Magic Games, he finds himself overwhelmed by his foe's strength and speed despite using various monster transformations. Finally, when Bacchus decides to go for the finisher, Elfman switches forms one last time to his Lizardman form, exploiting the fact that Bacchus' bare hands are incredibly vulnerable to being damaged on the tough, spiky scales of his body with the speed and force he's fighting with. The fight then becomes the question of whether or not Bacchus' hands can tear down Elfman's defenses before he reduces them to bloody damaged limbs and can't keep fighting, a clash that Elfman just barely wins.
    • Even the wizard king August falls prey to one. His ability to instantly copy any magic he encounters is one of the most broken powers in the series, which combined with his unmatched levels of raw magical power means he can almost always outdo people at their own techniques. However he can't copy magic that relies on tools he doesn't possess, like Cana's cards or Lucy's keys.
  • Fist of the North Star plays with this trope:
    • Kenshiro's Hokuto Shinken relies on hitting an enemy's Pressure Points, so Shin sicked on him Mr. Heart, who is so fat Kenshiro can't hit his pressure points. This gets subverted because, much to Shin's shock, Hokuto Shinken has a move to push away an enemy's fat (and another to hit an opponent's pressure points with an energy attack, but that one showed up in a different fight).
    • This weakness resurfaces, to much more effect, when Kenshiro faces Souther, who, having Bizarre Human Biology in the form of situs inversus totalis, has all the pressure points switched around. This invulnerability also vanishes if the Hokuto practitioner can figure its source — and while Kenshiro only manages during their rematch, Toki, a trained medic, knew it from the start.
    • Hokuto Shinken and Nanto Seiken practitioners are trained as assassins and formidable Combat Pragmatists who can sneak up on anyone except another practitioner. So they have no idea on how to deal with the rare opponent who can get the drop on them, like the Colonel (an experienced soldier and Nanto practitioner, who fought Kenshiro on a terrain that gave him a huge advantage and managed to last much longer than he had any right to) or Yuda (who is just that dirty, and a Nanto practitioner to boot. Rei beat him only because Yuda stopped to gloat before the finishing attack and froze up at the beauty of his desperate counterattack).
    • Rei's Nanto Shuicho Ken technique relies on fast and graceful movements, and thus on his legs. Yuda gains the upper hand in their fight by flooding the whole area, thus making him sluggish (and, to play it safe, kept the distance while spamming an attack that worked at distance, something Rei has no equivalent of).
    • Subverted with Shuu: he's blind, so some of Souther's soldiers guessed they would disorient him by surrounding him and make lots of noise... except that he's a top-tier martial arts master who's far too experienced to ignore such an obvious weakness, and he's had years to come up with a counter to that and pretty much every other way that an opponent might exploit his lack of eyesight.
    • During his temporary blindness, Kenshiro found himself in a similar situation. He swiftly dealt with his attackers thanks to his new ability to summon the skills of his late allies, including Shuu.
  • Food Wars!: Soma is a very experienced and skilled chef, and has worked on-and-off at his dad's "special-of-the-day"-restaurant since he was three. However, he is clearly out of his depth when faced with any situation when his experiences aren't applicable. He flounders with kitchen French, fails to consider his dish's staying power on a heat plate when devising a recipe for a buffet (a situation which would never occur at his dad's restaurant), can't keep up with cooking multiple multi-course meals (as opposed to single dishes, one at a time), and struggles with making the type of high-impact foods that win cooking contests, as opposed to the "enjoy-the-meal" style he's used to.
  • Fullmetal Alchemist:
    • Alchemy in general can, in practice, transform or reshape practically anything into anything else as long as you're dealing with unliving things — but you do have to have enough material and use it in a logical way, which leads to Ed being unable to build a bridge over a chasm because the rock breaks under its own weight and he hasn't got an unlimited amount of it to use.
    • Ed and Al's alchemy, thanks to receiving knowledge from the Gate, is much easier to use than most since they don't need to make an alchemic circle and just need to clap their hands together. Of course, while this is incredibly useful and versatile, it requires the use of both functioning hands. Many times Ed and Al have been stopped from using alchemy by something as simple as their hands being bound...or just losing an arm. Thank goodness for the fact it's the replaceable limbs that get wrecked, and the fact they can still draw alchemic circles.
    • The fact that Roy Mustang is useless when it's raining is something of a Running Gag. This is because, well, he uses fire, and rain is going to put a bit of a damper on his ability to get a flame going. However, this is only when he himself (specifically his hands) are wet, because if something else is covered in water he can just decompose it into hydrogen and oxygen then ignite that. This is because his gloves are made from a special material called ignition cloth that cause a spark when he snaps, when combined with transmutation circles on the back let him do his alchemy. Give him another source of flame (like a lighter) and he can overcome them being wet. In fact, he arguably becomes more dangerous, because he now has all the hydrogen and oxygen he could ever need readily available (water's molecular structure is very simple, making it easier to manipulate), but the problem now is that unless he traps the enemy into an enclosed space with the water, the resulting massive and more importantly imprecise explosion is just as likely to hit any nearby allies or himself.
    • Pride's Living Shadow powers don't work in total darkness since he needs a light source to cast a shadow. It's also weak to the flashbang that Alphonse used since the light is too bright to cast a shadow (not to mention he uses the shadow to see).
    • Wrath has the Ultimate Eye that allows him to instantly predict what will happen in battle, allowing him to perfectly dodge, block, and strike no matter what the opponent does. The one weakness is that it's an eye, and its power is therefore sight-based: it cannot predict an attack if it cannot see the attacker.
      • Downplayed with Wrath's second weakness. Wrath's Philosopher's Stone only has one soul and life, making him the only homunculus without a regenerative healing factor, so he can be killed like any normal human being. However, he can still take far more punishment than a human being normally can, so even after being severely wounded and losing a lot of blood, he can still put up a good fight against his adversaries. He came close to killing Scar several times despite being on the verge of death.
    • Greed's Ultimate Shield allows him to cover his entire body with a nearly impenetrable barrier, making him more or less invincible. However, his shield is the result of Greed rearranging the structure of the carbon in his body in order to give it diamond-like qualities; an alchemist who knows how his power works can easily transmute his carbon shield into the carbon-based, and extremely brittle, graphite, making the shield completely worthless.
    • Homunculi in general possess a Philosopher's Stone acting as their core, which contains the energy they use for their powers and regeneration. Problem is, Philosopher's Stones are created through alchemical transmutation... and there's a reverse transmutation that instantly depletes a Stone of its energy. This is used to one-shot the homunculus Envy, reducing him into a nearly-harmless larva.
      • There's also the fact that the Philosopher's Stone is a finite energy source, so a homunculus can be beaten by sheer attrition or being constantly pressured with excessive force, as demonstrated when Roy Mustang incinerated Lust and Envy until they couldn't regenerate anymore, or when Sloth expended all his energy regenerating in his fight against the Armstrong siblings and their newly arrived allies. Not even Father can hold out for more than a few minutes against the combined assault of Ed, Izumi, Mustang, Armstrong, Greed/Ling, Lan Fan, Darius, Zampano, and the Briggs troops, and certainly not helping was that he was already taxing himself trying to keep Truth contained with a reduced collection of souls after losing the population of Amestris and wasting more defending himself.
    • Scar's right arm has incredible destructive power, but it still operates under the same premise as normal alchemy — he requires a knowledge of what he's transmuting before he can do it. He's failed to destroy Ed's automail arm twice due to this; the first time was because he didn't realize right away that it was automail, the second because he didn't know that it was no longer composed of steel.
  • In Future Diary, police detective Keigo Kurusu's future diary feeds him data from whatever investigation he's currently conducting. The solution? Expose his Dirty Cop ways and get him kicked off the force, meaning he's not on any investigation, totally bricking his diary.
    • The diaries, in general, have specific strengths and weaknesses. As such, the survival game depends on how a diary user works around his diary's weakness. Yukiteru's diary, for instance, can predict events that happen around him, but not events that happen to him, so anything unexpected happening to him like suddenly getting stabbed or stepping on a mine he didn't notice will most likely kill him. Also placing him in a confined space limits the things his diary can predict. Yuno's diary perfectly augments Yukiteru's diary by being able to predict anything he does and everything that happens to him. The downside is that aside from the "Dead End" message, Yuno's diary does not predict events that happen to or around Yuno herself.
  • Many of the heroes on High School D×D have logical drawbacks to their powers:
    • Issei's Boosted Gear will double his power every ten seconds — that means it usually takes at least a minute of combat before he's up to snuff. Additionally, particularly at the beginning of the series, his base power is no greater than an average human, and his body can't handle a huge amount of strength at once, placing a limit on how much he can power up before killing himself. He's able to increase this limit through training.
    • Kiba also relies on technique to make the most of an incredibly flexible Sacred Gear, making attacks to his legs a glaring weakness.
    • Koneko is incredibly strong and nearly indestructible, but not particularly nimble. Anything that can fly can avoid her easily, especially if there's nothing around to throw - this is a problem when most of her enemies have wings.
  • In Holyland, Tsuchiya's wrestling has three:
    • His best moves need him to go very low, even scraping the ground with legs, knees and hands. He found out the hard way that going that low on concrete is a quick way to harm himself, leading him to not use them unless he's on a soft terrain (he states the best would be sand, but a lawn is soft enough).
      • On the plus side, on his ideal ground kickers such as Masaki, Shogo and Yuu (the ones who defeated him, with the first being the one who exposed the concrete problem) would find that sand is too soft for them to stand on a foot while moving the other that fast, and Masaki and Yuu, who use boxing-style footwork, would find themselves heavily slowed down.
    • To avoid scraping on the ground, Tsuchiya goes with normal American Football-style tackles that expose the back of his neck and put his head in easy reach of kicks, making him extremely vulnerable against skilled opponents such as Shogo (who hit him with a downward punch) and Yuu (who kicked him in the head).
    • As a grappler, he was never trained to block or parry strikes. He usually wins by tackling his opponents faster than they could strike and then throwing him away, but when he faced Yuu, knowing his speed, uses a boxing semi-crouch stance, not knowing it relies on the gloves (that soften the blows enough for the arms to take them and enlarge the hands enough to prevent the fist from getting between the arms) to be effective.
  • Characters in Hunter × Hunter are fully aware that their powers have shortcomings. Knowing their enemies will brutally exploit them in ways they don't expect, most characters keep them a secret even from the people closest to them until absolutely necessary. Those who reveal them prematurely or to someone who survives the encounter tend to wind up for the worse:
    • Princess Camellia has a Death-Activated Superpower in which anyone who kills her has their life force removed, then used to restore Camellia back to life and heal all her wounds. However, it only works if someone murders her. Her older brother, Prince Benjamin, catches on to this fact and just breaks her limbs without killing her, incapacitating her without allowing her power to activate.
    • Genthru is ultimately defeated by a group of people far weaker than he is because they figured out how his Mad Bomber powers work without dying in the process — namely, that for him to not be harmed by his own close-range explosions, Genthru has to put up armor out of Battle Aura concentrated on where the explosions are, leaving him completely defenseless everywhere else. Splashing flammable liquids onto him will also neutralize Genthru, as any attempts at said close-range explosions will set him on fire too.
      • On the other hand, Genthru's other power, the Countdown bomb, attaches itself onto people only after he explains its rules and how to defuse it to his victims. He considers this a major weakness, and he has to be stronger and faster than his victims by a significant margin to not be defeated before the bombs go off.
    • Gon defeats Gido, who spins like a top and is untouchable when spinning, without ever needing to use his own powers by simply lifting up the floor tile he's on, tipping Gido off balance.
    • Killua, while wandering through a forest, suddenly has dart-shaped fish materialize on him, puncturing his body wherever they materialize. Seeing a dartboard pattern projected onto the front of his body, Killua soon figures out the fish are materializing based on the sequence for a perfect game of darts and figures out where all of the remaining fish will materialize. The people responsible, a pair of siblings playing darts in a hidden location, don't have knowledge of Killua's condition. Knowing they played a perfect game and knowing that it insta-kills anyone punctured by all of the fish in the order corresponding to a perfect game, come over to confirm the kill — only for Killua to just impale them with their own dart-shaped fish.
    • Overlaps with Loophole Abuse when Cheetu transports Morel to an open savannah space and challenges Morel to catch him within six hours. Cheetu has Super Speed, so Morel has no hope of catching him in a normal chase. However, Morel knows he doesn't have to run around futilely, and he catches Cheetu in a snare trap, rendering him hanging upside-down from a tree and allowing Morel to easily win this game. Also a case of Didn't Think This Through because Cheetu admits, upon his defeat, that everything would've gone back to normal had time run out. The power literally has no effect other than to waste time.
  • This comes up sometimes in JoJo's Bizarre Adventure. Most notably, Vanilla Ice in Part 3 has a brutally powerful Stand, Cream, whose power is to disintegrate anything it touches. He climbs inside of it when it's used. Polnareff, however, realizes that when Ice is inside Cream, he can't see — to protect himself from Cream's power, he has to close its mouth, leaving him literally attacking blind. He's also worked out that Vanilla Ice is a vampire, something Ice himself hasn't realized, and so he tricks him into blowing several holes in the wall and then pushing him outside. The sun's still up.
    • As a whole, Stands have one major weakness dependent on the user; they're your fighting instincts/passion personified. If a character has no ability to stand up for themselves or what they believe in, then they'll end up with Stands with low stats to match, and occasionally Stands that even kill the user. A standout example is Masazo Kinoto of Part 4, who was shot by a Stand Arrow, who was just determined enough to not die from it, but literally only just; he was too passive to actually control his power. He ended up with Cheap Trick, a Stand that will kill him if anyone looks at his back (and then jump to the person who looked), and to make it worse, it's sentient and actively tries to make people look in order to kill them.
    • Antonio Trussardi's Pearl Jam can make food that cures any illness or injury, but Healing Magic Is the Hardest, and his Stand comes with a lot of caveats: first, basic rules of cooking still apply, so a messed-up dish simply won't work. Also, each dish only cures one ailment at a time, with rarer and more difficult to treat diseases requiring proportionately rare ingredients, so Tonio's Stand requires a lot of knowledge and preparation to work correctly.
    • Kishibe Rohan's Heaven's Door can turn parts of people's skin into books that contain details of their entire life up to that point, and anything written on those books will become truth. It's absurdly useful, but there's one catch: the ability only activates when someone sees Rohan's latest drawing. Josuke saves Koichi and Okuyasu from him by just rushing in with his eyes closed, and then when Rohan insults his hair, going blind with rage.
    • Akira's Red Hot Chilli Pepper zigzags this trope, as it is made of electricity. At first, it seems that his weakness is insulating materials like rubber, but once it's revealed that Chilli Pepper can accumulate so much electricity in his body that no practical amount of rubber can stop him, that idea goes right out the window. It turns out, though, that large amounts of electrically conductive materials (like seawater) can leech away at the electricity in his body, causing him to dissolve.
    • Yoshikage Kira's Killer Queen is an extremely deadly and versatile Stand that ends up with three separate techniques to make targets explode. Luckily for our heroes, said powers all have clearly defined parameters and vulnerabilities.
      • All of his bombs require a detonator, which is either the victim touching an object made into a bomb by Killer Queen or Kira miming pressing a detonator switch with his hand. If he is unable to make that motion or cause his victim to touch these affected objects, he cannot activate his bombs. The heroes barely manage to prevent Kira from using Bites the Dust on a random paramedic by having Koichi and Jotaro crush his hand, rendering him unable to hit the switch.
      • His second bomb, Sheer Heart Attack, is a 'fire and forget' automatic power meant to kill any potential pursuers while Kira himself escapes. It works by having Killer Queen detach its left hand, which turns into an indestructible heat-seeking tank bomb. Its weak connection to Kira makes it Nigh-Invulnerable, but Kira can't control it other than activating and deactivating the power — and to do this, he has to retrieve the tank manually. So if you manage to figure out a way around the bomb (like setting a fire as a decoy), Kira won't know until he steps back into the situation. His Stand's 'one bomb at a time' limit also means that until he does so, he can't use any other bombs.
      • His third bomb, "Bites the Dust", is an autonomous Stand power that traps its victim in a "Groundhog Day" Loop, and if anyone finds out about Kira's identity through the victim, they explode. The victim then restarts the day, though any victims will continue to explode in every iteration at the same time they first died. It's incredibly powerful, but it has two big weaknesses:
      • First, Killer Queen can only have one bomb out at a time, and Bites the Dust takes that to the logical extreme as Kira has to attach Killer Queen to someone to use it. This locks him out of his other powers for as long as Bites the Dust is active, so if he ever needs to use Killer Queen for himself (like in self-defense), he must end the loop immediately. This also cancels all effects of the loop, so anyone who was set to explode after Bites the Dust was recalled would be completely safe.
      • Second, it's also completely autonomous and Kira's only control over it is 'off' and 'on'. Because the loop revolves around the victim, Kira cannot gain any direct protection from it and could wind up exploding himself if he fell afoul of its rules. The victim is also the only person who retains memories of the previous iterations, so although Kira is aware of when Bites the Dust is active, he has to guess if it actually did anything.
      • Hayato is able to exploit these two conditions to rid himself of the loop, as he gets Josuke to attack Kira while it's active. Josuke would have shortly thereafter been killed by Bites the Dust, but since Kira didn't know that and thought he needed his Stand to protect himself, he cancelled the power so he could use Killer Queen.
    • Giorno's Gold Experience can imbue inanimate objects with life energy, transforming them into living beings. While this does have a variety of uses, it also puts him at a disadvantage against opponents who can create an environment no living thing can survive in, like Ghiaccio with his Stand White Album (which leaves him only able to create short tundra grass), or opponents whose abilities specifically target organic matter, like Cioccolata's Green Day.
    • Mista's gunplay is brutally effective on paper, and the Sex Pistols make his shots even more accurate and lethal. The main catch is that he needs his revolver to pull any of his Stand abilities off, and he obviously needs bullets to fire. If he runs into a Stand that can ignore or negate his shots, he swiftly becomes outmatched. Since his powers depend on him having a revolver, losing his preferred gun makes his combat effectiveness suddenly tank.
    • Narancia's Aerosmith has a carbon dioxide radar that can track enemies through their breathing. However, there's two issues that it falls victim to. First, if the enemy is holding their breath, then the radar can't find them. Second, when Narancia is surrounded by fire, every individual flame will show up as a dot on the radar, since CO2 is produced when organic materials burn.
    • Pucci's Made in Heaven in Part 6 is insanely overpowered, since it can speed up time to the point where no one can keep up with it. However, any attacks that induce damage over time, such as poisoning, will have their effects sped up as well. This is how Emporio kills Pucci — he traps him in a small room and then uses Weather Report (obtained via a Stand Disc) to increase the amount of oxygen in the air. Both are affected by oxygen toxicity, but Pucci, being sped up, succumbs almost immediately while Emporio lives long enough to win the fight.
      • This doesn't apply to bleeding due to a loophole. Pucci bleeds faster than normal, but his blood also clots faster.
    • Satoru Akefu from Jo Jolion has the Stand Wonder of U, which triggers whenever someone intends to pursue him and causes some improbable misfortune to hit them (i.e. a falling object aims itself at the victim and hits at over its terminal velocity). Though incredibly overpowered, it does have two weaknesses. One, since it acts automatically on others' intent, it won't trigger if the target doesn't actually have the intent to pursue him: for example, it won't attack someone who is being taken to him by outside parties, someone who is just crossing his path (for example, someone who is directed to the same location the doctor is headed to, but who has no intention of actually fighting the doctor), and someone who is staying still. Attacking personally also deprives him of his greatest asset, since self-defense isn't pursuit. Second, there's nothing saying that anything displaced by Wonder of U can't be countered by an opposing force, like Mitsuba using her Stand to re-direct things thrown at her.
    • This trope is inverted for "automatic" Stands, which follow pre-set directions instead of being controlled by their user. Because of this, they're quite unwieldy and have openings that are easily exploited, like Melone's Babyface needing tons of prep time, and Kira's Sheer Heart Attack & Carne's Notorious B.I.G. being easily distracted by lures that have more of whatever quality they're seeking (heat for Sheer Heart Attack and speed for Notorious B.I.G.). This independence also means they are unaffected by the usual 'the stronger the Stand, the shorter the range' rule and lack the Synchronization that normal Stands have with their wielders, so the user is completely unaffected by any damage the Stand suffers... which means they can't tell if it's been triggered, destroyed, or misdirected.
    • Hamon energy is a special wavelength generated in the human body via strict breath control and blood flow. Disrupting either of these disrupts the generation of Hamon; the methods of doing so have ranged from the mundane (choking, drowning, respiratory trauma) to the insane (freezing or even removing the opponent's blood). Exploited for all its worth when a Not Quite Dead Dio sneak-attacks Jonathan and shoots him through the neck with his Eye Beams, not only fatally wounding Jonathan but disrupting his breathing to the point he can barely unleash a Hamon blast strong enough to kill a single zombie when by this point he was the strongest Hamon user in the canon able to end much stronger vampires with the ease of killing an insect, forcing him to resort to a Heroic Sacrifice to stop Dio's plans temporarily. The Hamon energy itself, meanwhile, doesn't translate well between different materials, and it can be redirected by skilled, prepared, or lucky opponents.
  • Subverted in Kill la Kill: Gamagoori's Three-Star Uniform is powered up by being attacked in its defensive mode, so Ryuko thinks she can avoid triggering its second form (Combat Tentacles) by just not attacking. At that point, Gamagoori reveals his uniform can just trigger the second form manually by simply flogging itself.
  • The manga of Kingdom Hearts: Chain of Memories has Larxene defeated in such a way. Sora and Donald combined their Fire and Ice spells to soak Larxene with water, causing her lightning spells to electrocute herself instead. This doesn't work in the game.
  • Medaka Box loves this trope.
    • The best example is probably the array of weaknesses that Yukuhashi Mizou's abnormality, mind-scanning, has, thanks to it working really, really well. Catching even the smallest thoughts, he can't decipher input from a person who does not think clearly and jumps from one thought to another fast enough for it to be of use; he cannot function in crowds by himself, due to being overwhelmed by the stream of thoughts; he feels pain that the people within his reception range feel; and, finally, he cannot fight a good person who honestly had legitimate reasons to oppose him, without seeing how they think and starting to empathize with them.
    • Medaka's own ability, The End, which allows her to copy and perfect anything used against her, is incredibly good, but it has two major weaknesses. First, she's forced to sit out several major fights because the opponents had powers she wouldn't want to copy (like a hitman whose power is bloodlust — The End would perfect it to the point where Medaka became a rampaging psychopath). Second, while she can copy powers, she can't copy things that require self-expression, meaning she has No Social Skills and fails at any form of artistic expression like music; even if her performance is perfect in a technical sense, it lacks any kind of passion and thus comes off as utterly boring and mildly disturbing. Because of this, she can't copy Styles.
  • Shows up at several times in Monster Musume. The literally cold-blooded Miia is susceptible to cold temperatures, Centorea Shianus' giant breasts actively interfere with her coordination and balance during combat, Papi can't fly when she's wet, Suu can get diluted when exposed to too much water, Meroune gets poisoned by swimming in chlorinated water the same way a human would by breathing bleach fumes, and Rachnera can't handle extreme heat or cold and cannot breathe if her nonhuman abdomen's underside is submerged (that's where spiders have their respiratory orifices).
  • MOON – Subaru Solitude Standing has Nico, a blind ballet dancer. While his other senses improved to an extent, his blindness remains with its logical weaknesses. He needs to feel the ground and objects when he's in unfamiliar rooms, and he can't dance duets. He can feel energy from other dancers, but most of them are so faint that it would be difficult to impossible to dance well with them. The fact that Subaru manages to send out enough energy to allow Nico to dance with her is considered an amazing feat.
  • My Hero Academia: This is pretty much ubiquitous, which drives home repeatedly that Quirks are physical abilities subject to the ordinary limits of the human body.
    • In general, any Quirk relying on close-range combat or touching an opponent has to actually get there first; smart opponents throughout the series who notice this will keep their distance utilizing their mobility or ranged Quirks.
    • Midoriya can use One For All to amplify his muscle strength, speed, and durability as a form of Magic Enhancement, but his muscles still suffer the backlash, so using too much power on weak muscles causes crippling injuries. Most of Midoriya's troubles with One for All stem from the fact that he was given the power rather than being born with it, so unlike his classmates he doesn't have years of experience in using it.
    • Bakugo doesn't suffer the full recoil when he's Having a Blast, but he does suffer some, and can injure himself if he overuses his powers. His explosions are also created through his sweat-glands, so they are less effective in the cold.
    • Gravity Master Uraraka experiences symptoms of vertigo if she overuses her power, especially on herself.
    • Iida has Super Speed courtesy of a set of engines in his legs, which need to shift gears and can overheat or become clogged if not properly maintained.
    • Yaoyorozu can create objects from her body, but she needs material to create them from and must understand the specifics of exactly what she is creating (i.e. to create salt she must be aware that "salt" consists of NaCl). This means that she can't create too much without leaving herself exhausted and dangerously underweight, and she has trouble conjuring up big, complex items on the fly. The Quirk is only useful for heroism because she's a certified Teen Genius who can easily understand the necessary science behind it.
    • Aizawa can nullify the Quirk of someone else by staring at them, but must maintain line of sight and cannot blink while doing so. This has resulted in eye strain and frequent dryness from prolonged use. He also can't nullify mutation-type Quirks, since they're part of the user's body and are always on.
    • Todoroki overheats when using his fire powers, and freezes over when using his ice powers. He was the product of an Arranged Marriage for the specific purpose of creating a child with a hybrid ice-and-fire Quirk whose weaknesses would cancel each other out. However, he still has weaknesses: Since he emits fire from his left side and ice from his right, at close range he has difficulty getting the correct one pointed at the enemy. He also has difficulty using them at the same time since they just cancel each other out if he's not careful, and switching between them can give the enemy an opening.
    • Todoroki's brother Toya wasn't so lucky, as he got an extreme version of his father's fire powers... but inherited a weakness to fire from his mother. We know him better as Dabi of the League of Villains. You know, the guy who basically has his burnt skin stapled to his body?
    • Tokoyami has a Living Shadow that becomes weaker in bright light. Vice-versa, being in darker shadows strengthens it... to the point that it starts to get out of Tokoyami's control.
    • Kaminari short-circuits his own brain and temporarily becomes a dullard incapable of fighting back if he unleashes his full Shock and Awe. He also can't control the electricity after he discharges it, meaning he either needs to manually make a circuit for it (which he later gets gadgets made to help with) or fire his Quirk off every which way and really hope he doesn't catch any allies.
    • Jiro's earphone jacks mean that she's vulnerable to very loud sounds.
    • Mineta, who can pull sticky balls from his scalp, will begin bleeding if he pulls out too many in too short a time frame.
    • Hagakure has to be completely naked to make the most of her Invisibility, so she's vulnerable to temperature extremes.
    • Tetsutetsu's Quirk will grow weaker if repeatedly hit with something hard and he needs to keep up a heavy diet of iron to strengthen his Quirk.
    • Neito Monoma can copy the Quirks of those he touches, but he can only use one Quirk at its base state. One for All is a "dud" to him because he can only copy its power stockpile aspect and he doesn't have the time to build up a stockpile. This applies to any Quirk that requires accumulating power — since he has no time for the accumulation to occur, he can't use that power.
    • Mirio has it the worst: He can make himself intangible, but he has none of the Required Secondary Powers. While intangible, he cannot see, hear, or even breathe, as every particle will travel right through him. He is also still affected by gravity when intangible, so every act of passing through things becomes a complicated process so he doesn't fall through the ground. By the time of the present he's practiced enough with it to put the 'awesome' back in Difficult, but Awesome, but for a while the Quirk was worse than useless.
    • Mirio's Quirk also exploits a Logical Weakness in Chisaki's Quirk. The Quirk needs touch to function, but Mirio can't be touched if he doesn't want to be.
    • Shinso can Mind Control anyone who speaks to him, but only if they verbally respond to what he says. Anyone who knows this can safely avoid its effects by remaining silent. His Quirk also won't activate if his voice is electronically altered, such as speaking though a megaphone or electronic voice-changer, since technically the voice would be the device's and not his.
    • Kuroiro can possess any shadow or anything black, but he can't just teleport between objects, he needs to physically move to the thing he wants to merge with next. During the Joint Training Arc, Tokoyami traps Kuroiro in his own cloak and keeps it separate from anything else so he can't escape.
    • Komori can produce spores that cause mushrooms to grow instantly wherever they land. However, they're still mushrooms, which means they need at least some moisture in the air in order to grow and can be killed by certain substances. Hagakura and Tokoyami exploit this in their match in the Joint Training Arc by coating their bodies in ethanol spray.
    • This is exploited in the Final Exam arc, which pits a pair of students against the teacher they'd have the most trouble with (the teachers are going easy on them; the purpose of the test was to see them face their weaknesses, not get curb stomped). Kirishima and Sato, who have time limits on their powers, fight against the Stone Wall Cementoss, who can easily beat them in a battle of attrition. Yaoyorozu and Todoroki, the students most dependent on their powerful Quirks, are up against the mobile Power Nullifier Aizawa. Kaminari and Ashido are not the brightest, so they face Principal Nezu. Ojiro and Iida face Power Loader, who destabilizes the ground so they can't get any leverage to use their abilities. Sero and Mineta, whose Quirks are mostly used for sticking others in place, are pitted against Midnight, whose Quirk can put them to sleep without her needing to move an inch. Squishy-but-mobile Tokoyami and Tsuyu are pitted against Ectoplasm, who can use his power to corner them. Jiro and Koda's Quirks both rely on sound, so they go against Present Mic, and so forth.
    • All For One's power is seriously good, but it doesn't come with instruction manuals for the Quirks he steals. If All For One wants to be able to use individual Quirks to the level of their original users, he's going to have to train with said Quirks like the real user did, and since he has so many Quirks, he's average at best with using any individual one. This is why he prefers Boring, but Practical and Simple, yet Awesome powers like Super Strength and Super Toughness over Difficult, but Awesome powers like Best Jeanist's control over fibers, since he can't afford to put in the time to train it to awesome level.
    • Hawks has feathers that he can control telekinetically. It's a very versatile Quirk that he uses to great effect, essentially giving him flight, telekinesis, and a dangerous weapon all in one — but he's still limited by the fact that he only has so many feathers, which means he can only do so many things with them at once. The feathers are also vulnerable to being destroyed in battle, after which he'll need time to regrow them.
    • The Nomu Shigaraki brings to the training dome has a shock absorption Quirk, which lets it survive even a full power Detroit Smash from Midoriya. But as All Might notes, it's shock absorption and not shock nullification, which means there's eventually a limit to how many impacts the Nomu can take, a limit All Might's relentless attacks eventually surpass.
    • Re-Destro can use the everyday stress he accumulates to increase his strength and size, but that only extends to his flesh and bone body, which means the prosthetic legs he gets after his fight with Shigaraki remain the exact same no matter how strong he gets, and even snap under his weight.
    • Gigantomachia is massive, incredibly tough, and nearly unstoppable, but he still has to breathe and is presumably as vulnerable to Midnight's sleep gas as anyone else. "Presumably" because the villains don't give Midnight the chance to try and take her out while Gigantomachia is on the rampage, forcing her to tell Yaoyorozu to create anesthesia drugs to make him ingest and hopefully knock him out. However, even when the students successfully make him eat one large vial, Gigantomachia's sheer vitality lets him shrug the effects off and keep going on the warpath for a little while longer.
    • Lady Nagant subverts this. During their fight, Midoriya attempts to capture Nagant by using an entire office building as cover to close the distance, reasoning that a sniper like her would be vulnerable in close quarters. Unfortunately for him, she's been trained to deal with close-range fighters, worming her way out of his grip before assailing him with a barrage of bullets from all directions. It's played straight later on, however; for all the power and combat abilities her Quirk has, it ultimately boils down to having a sniper rifle in her right arm. Exclusively her right arm. Shattering it effectively renders Nagant powerless before Izuku and unable to use her Quirk, despite still being capable of moving on her own.
    • Koichi from the Vigilantes spin-off can repel objects from his hands and feet and also reverse the force to stick to surfaces. This means that he can anchor himself to whatever he's standing on and use the repelling force of his palms as mini-shields that allow him to defect blows or objects. However, all of this is dependent on his weight and strength so anything too big or heavy for him to stop, he can only deflect or alter the course not stop it.
  • In one episode of Myriad Colors Phantom World, the protagonists battle a Phantom that resembles a humanoid sunflower. Koito quickly works out that, because it's a sunflower, it always turns to face the sun, so they're able to defeat it by simply walking around it and attacking from behind.
  • Several techniques in Naruto are held back from being Story-Breaker Power by limits that are by-products of their usage or make up.
    • Naruto's Rasen-Shuriken attack is essentially a flechette bomb that attacks organisms' individual cells. It has a tendency to do this to the person who is holding it as well as the target, hence why Tsunade labels it forbidden jutsu. He overcomes this with Sage Mode as it allows him to throw it.
    • Kinkaku and Ginkaku subvert this with one of their ninja tools, which causes people to be sucked in if they say the word they say most in life. You'd think it would be easily avoided by just not saying anything, but remaining silent long enough also gets you sucked in.
    • Shikamaru's shadow powers, which often require his shadow to touch the enemy's, are often influenced by the amount of light available. For example, one Filler Villain manages to escape his jutsu with a smoke bomb.
    • Water jutsus often require existing sources of water to be effective. As such, one Filler Villain (who uses his Twin Tonfas as dowel sticks) is defeated by being lured to an area with virtually no groundwater.
    • Tobi's abilities make himself intangible. Of course, he can't attack while phased, since it would just go through his foe. The best time to attack, then, is when he attacks. He does try to get around this when fighting Minato by using chains that trail behind him, in order to catch foes who he phases through.
    • Also, due to shared Mangekyo Sharingans, Tobi's phasing is absolutely useless against Kakashi; he can match phases with Tobi and attack him either way.
    • Sharingan users do not gain any Required Secondary Powers to any techniques they copy; they are still subject to the particular shinobi's personal limitations. Sasuke's attempts to copy Lee's taijutsu being the most cited example (Lee is a taijutsu specialist due to a lack of aptitude in the other arts, so his body is at a level of conditioning the more-balanced Sasuke can't match).
    • The Sharingan is an eye power, meaning it grants enhanced perception but no physical enhancement. A Sharingan user can see an attack coming and still not be able to actually defend against it if they aren't strong or fast enough. For example, in their fight, Sasuke blocks Lee's kick but Lee is so much stronger and faster for it to not matter. Similarly, the human eye can only track so many objects at once. While fighting Killer Bee, a number of hits Sasuke takes are due to futilely trying to track both the man himself as well as his seven swords which he often threw in the air.
    • Rock Lee has a really obvious weakness that stops him from being among the strongest ninja: He can't use ninjutsu or genjutsu, two-thirds of the fundamental ninja arts. So while he can move and hit hard he can't defeat illusions or enemies that can counter physical attack (his rival Neji for example can reflect any attack with his Eight Trigrams Palms Revolving Heaven jutsu and his Gentle Fist attacks organs and chakra points which no amount of physical conditioning can stop).
    • On the other end of the spectrum, the specific taijutsu style utilized by the Hyūga clan, demonstrated as early as the Chūnin Exams arc, exploits an inherent logical weakness in all human beings: using their Byakugan, the Hyūga are able to see the chakra networks of others and use their own chakra-based abilities to attack both the chakra network and internal organs of their opponents because, (as mentioned above with Rock Lee) no matter how hard you train your body, you can't strengthen your heart or liver and whatnot.
  • In Negima! Magister Negi Magi Negi gets superspeed by turning into lightning. This is countered by Rakan pointing out that lightning gives off positive streamers at the destination meaning he knows where it's going to strike. Because his perception isn't sped up as well he can't properly control himself. The upgraded version fixes this by giving him those sped-up perceptions and having him fight at very short range as opposed to his previous hit-and-run style, giving an opponent almost no time to react.
  • The Devil Fruits of One Piece can frequently fall into this.
    • Luffy's rubber body, which makes him more or less immune to blunt force, renders him no less vulnerable to blades than he ever was. For Luffy, heat also apparently makes him extra squishy. He also requires constant muscle control to not stretch.
    • Nico Robin's ability to grow countless copies of her body parts from any solid surface within a large radius, including right from the bodies of her enemies, and perfectly control them as if they were normal parts of her body, would be incredibly powerful if not for the fact that copies also transfer feedback as they were normal parts of her body — not only does she feel pain whenever they are damaged (which happens easily, given that they retain her unimpressive durability), enemies can channel harmful Devil Fruit effects through them.
    • God Enel's lightning-based powers have no effect on rubber, thus allowing Luffy to harm him. But even then, Enel has Observation Haki that allows him to predict any attack, so Luffy still can't hit him. Luffy gets around this by ricocheting his punches off of a wall. Since Luffy isn't consciously controlling where his attacks are going after they ricocheted, Enel can't predict them, and he gets pummelled. Enel eventually loses to an attack that he can foresee but not stop until too late because it's simply too fast.
    • One of Enel's top fighters, Satori, has the same ability to predict any attack and relies on it so much that when something unexpected happens, he gets really rattled. Luffy takes advantage of the distraction to wrap him up. Satori can see Sanji's ensuing kick coming, but bound as he is he has no ability to counter it.
    • Perona has the power to generate ghosts that strip anyone's spirit and optimism from them. But to her shock, they don't work on Usopp. He's such a pessimist he actually inverts the power: depressing the ghosts and even Perona herself.
    • Magma beats fire due to the hotter temperatures and magma being able to snuff out fire from its oxygen source. Meanwhile, ice has a hard time against fire and to a greater extent, magma. For an odd example, the more or less completely useless by this point, Mr. 3's wax power, in fact blocks almost every single poison Magellan has, although it's almost completely useless in the intensely hot fourth level of the prison.
    • Several Alabastan soldiers drink a potion that makes them extremely powerful, but will kill them in minutes. Crocodile realizes this and decides to simply wait out the duration, out of reach of their attacks, letting them die. Crocodile is finally defeated when Luffy figures out that Crocodile's ability to turn into sand can be hampered by becoming wet, so Luffy coats his hands with his own blood, allowing his punches to work.
    • Logia in general fall into this category, as they are literally elemental beings (though not always stuff we'd consider "elements"), and as such are vulnerable to the weaknesses of that element. Lightning losing to rubber, sand losing to liquids making it stick together, candy (no, seriously) losing to cooking flour that negates its stickiness so that attacking enemies won't become trapped, etc. Considering how powerful a Logia is, and how invulnerable they are, exploiting a logical elemental weakness is one of the few things on the entire planet that can even potentially harm them, unless a person has Armament Haki, which lets them hurt Logia users even if they're in an elemental form. Plus there's the matter that Logia are more sensitive to water than other Devil Fruit users: as in Luffy can get splashed and still fight (even if he's submerged, he just can't move himself, though others can still manipulate his body), while if someone like Smoker gets doused, he can't transform the wet body part until it's dry.
      • Blackbeard's Dark-Dark Fruit, despite being a Logia, works very differently. His element is darkness, which has black hole-ish properties... but said gravity is constantly applied to him. It not only forces his own body to stay together (he can't assume an elemental form), but it also attracts enemy attacks towards him; this makes said attacks harder to avoid, stronger and more painful.
    • Franky became a cyborg after suffering severe injury, giving him numerous gadgets and a super-durable steel body. However, since this was achieved by operating on himself, his back is unprotected — he can't modify something if he can't see or reach it.
    • Pica's Stone-Stone Fruit initially seems like an utter Game-Breaker. It allows him to assimilate with and control stone, and everything on Dressrosa is made of stone. He's finally beaten when Zoro realizes that if you cut his stone form in half, he has to escape into one part of it, and so Zoro repeatedly halves his giant stone form while keeping the parts in the air, until there isn't any stone large enough for Pica to hide in, nor can he escape into the ground. It's over for Pica after that. (Such an opponent needs to be strong enough to cut stone in the first place, of course.) This logical weaknesses was actually attached all the way back to Buggy the Clown. While his Chop-Chop powers enable him to split his body into numerous floating pieces, some part of his body needs to be the "base" part and stay on the ground. That's why Luffy is able to find and successfully attack his feet.
    • Charlotte Cracker of the Big Mom Pirates ate the Bisc-Bisc Fruit, which gives him the power to conjure up biscuits. Since Heart Is an Awesome Power, he's skilled enough to reshape the biscuits into armor and warriors that Luffy needs his Dangerous Forbidden Technique to fight against. Luckily, our Idiot Hero figures out a Mundane Utility; since biscuits are edible, all Luffy needs to do is eat Cracker's creations to hold his ground (though due to Cracker's abilities and Haki, Nami had to use water to soften them up at first, like regular biscuits.)
    • A villain in a Filler arc has the Pet-Pet Fruit, which creates Hypno Trinkets that make anyone affected by them have to obey his orders. Trafalgar Law defeats this by putting in ear plugs, since someone who can't hear the orders, logically, can't obey them.
      • This is also Scratchman Apoo's weakness, having a Devil Fruit power that translates music and sounds he makes into attacks. If one is outside the hearing range of the noises Apoo is making, or even if they just cover their ears, the attacks have no effect. Of course, that brings up a logical weakness of it's own... "WHAT?!"
    • Trafalgar Law can swap the positions of anything and rearrange parts of whatever is within his sphere of effect, which he triggers by doing a "come at me" gesture with his right hand. Vergo is able to get the best of Law by closing in faster than Law can complete the gesture.
  • Neon Genesis Evangelion has a few:
    • A giant machine/cyborg like an Evangelion Unit would need an enormous amount of power to function. The best NERV can do is provide a giant cable for the Units in question, and sure enough the cable always gets destroyed at the worst possible time.
      • Once the power ("umbilical") cable is cut, the Evas switch over to internal batteries that provide 1-5 minutes of power (depending on the current plot). Naturally, there's a few occasions where these run out as well.
    • During the fight against Zeruel (the strongest of the Angels), Shinji is able to achieve an astonishing 400% sync ratio with his Eva. The Angel is then obliterated in a Curb-Stomp Battle, but this has very serious consequences for Shinji: his body dissolves into LCL and his soul floats around in the entry plug, and Nerv has to work to restore his body and soul before Eva-01 absorbs him for good.
  • Overlord has Entoma Vasilissa Zeta. Since Entoma uses insects to fight and is herself part insect, insecticides and such are extremely effective against her. It also has archer ace Peroroncino, who is logically really weak in narrow, cramped passages.
  • Rave Master: During one battle, Haru is facing a mind-reading opponent, so he comes up with an unusual use for Rune-Save, a magic sword whose power is based on sealing. He invokes its power to seal his own mind long enough to land a combo that defeats his opponent.
  • Rosario + Vampire:
  • When the title character of Rurouni Kenshin fights an opponent with a BFS, he's able to out maneuver them by the sheer fact that with a blade that big and heavy, their range of motion in regards to attacks is limited to sideways slashes and overhead chops.
  • The Seven Deadly Sins:
    • Ban has Complete Immortality and can heal from pretty much any injury. He's still vulnerable to things like being petrified and getting his soul stolen.
    • The Ten Commandments all have incredibly powerful abilities, but although each Commandment has an immunity to the other nine Commandments, they are not immune to their own power, forcing them to limit their own actions. For example, Galan turns to stone anyone who lies or breaks an oath in his presence. He Cannot Tell a Lie lest he fall victim to his own ability (which eventually happens when he panics and runs away from Escanor after they had both sworn an oath that they would keep fighting until one of them was dead).
  • Soul Hunter: When Choukoumei goes One-Winged Angel and assumes his true form, that of a giant plant that spreads uncontrollably, Youzen deduces that since he is now a plant, all he has to do is kill the roots to get rid of it. But he realizes that it would be useless since Choukoumei would just spreads his seeds and grow faster than he could burn it. Taikoubou then decides to use another logical weakness, and freezes the whole thing with one giant icy tornado.
  • Episode 7 of Space Patrol Luluco revealed that Life Fibers (being made of thread) are incredibly flammable.
  • In Tiger Mask W the immense Bigfoot was immediately identified as being poor in ground fighting due his own bulk hampering him and having low stamina due all his fights ending in five minutes. In his fight with Tiger Mask it ends up subverted because he or his trainer could guess the weaknesses, so he trained himself to overcome them (he actually almost kills Tiger Mask in ground fighting, and Miss X states his stamina is unrivaled).
    • Haruna is immensely talented, and as Spring Tiger is a force to be reckoned with... But she's also unexperienced and completely self-trained, and more experienced divas can counter her with relative ease.
  • Mikey in Tokyo Revengers fights using his roundhouse kicks. Kazutora takes advantage of this by luring Mikey to having to fight Chonbo and Chome on a heap of cars where there's bad footing, preventing him from landing solid hits with his kicks.
  • Toriko has the horrendously broken "Minority World" ability, which allows the user to invert chances and properties of pretty much anything. For example: making falling objects go up instead of down, the ground soft and malleable instead of hard, attacks miss instead of hit, and lungs taking in carbon dioxide instead of oxygen (which will eventually kill people). However, you can counter this by purposefully doing the opposite of what you intend to do — for example, aiming your attacks away from your opponent so that Minority World will make them hit instead.
  • Keima, the main character of The World God Only Knows, is a legendarily skilled player of Dating Sims in which one pursues girls. However, the opposite of this (girls pursuing him) frequently leaves him at a loss.
  • Zeno in Yona of the Dawn has perhaps the most broken power of the Four Dragons. If injured, his body will mend itself with dragon scales, which grants him superhuman strength. Coupled with his Complete Immortality, he's formidable to behold. The problem is that this power only activates when he's injured, so it's possibly to bypass this power by grappling him or tying him up. Worse, since he was a skinny teenager when he became immortal, and doesn't age or grow, he can't improve his baseline strength.
  • YuYu Hakusho:
    • Kaito's ability to steal the soul of anyone who says the forbidden word is useless if no one speaks at all. Kurama, who has figured this out, proposes an alternative in which the condition gets stricter over time, and convinces Kaito to accept by adding the condition that if neither of them has violated the condition when the time has expired, Kurama will lose his soul, putting Kaito at an advantage.
    • Much earlier, a demon tries to cast an incantation to shrink Yusuke. However, the spell backfires and shrinks him instead. Genkai explains that these kinds of incantations rely on a receptive ear, and as it turns out Yusuke's ears were inadvertently plugged at the time, leaving only one target for the spell.
    • Yusuke also manages to handily take down a mind reader; the mind reader knows exactly what he's about to do, just not when. Yusuke's attack comes so quickly once he actually started moving that the mind reader couldn't react quickly enough to avoid it.


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