History Fanfic / TheEmeraldPhoenix

* {{BFG}}: Momo creates a belt-fed, automatic anti-tank rifle to deal with swarms of security robots during the attack on I-Island. Though she eventually has to stop due to the sheer number of them.

* BullyHunter: According to Setsuna, she got suspended ''nineteen'' times for protecting a classmate who used to get bullied for being Quirkless.

* DoomedDefeatist: Members of Class 1-A mock the General Studies students who basically quit the Entrance Exam the moment their Quirks didn't work on the villain robots, citing that three members of their class either have Quirks that don't work on robots or are Quirkless yet they all got in using either cleverness or physical power. Camie asks if they've even seen the inside of a weight room before.

* FanDisservice: By the end of the USJ, Momo is completely topless but is also extremely emaciated from using basically all of her fat reserves and has significant burns on her upper body.

* FightOffTheKryptonite: Kyoka's SuperHearing leaves her sensitive to loud noises, so she spent years training to reduce said weakness.

-->-- Website/FanfictionDotNet summary.

** Jirou can produce simple sounds besides just her heartbeat, such as morse code.
** Kaminari no longer produces electricity as an offensive weapon but instead stores and manipulates electricity (and magnetism to an extent), including using electricity to boost his healing. His weakness is also changed to having significant amounts of water shorting him out and causing painful electric shocks, even having to ground himself to take a shower. Kaminari is also not allowed inside cars lest his electricity accidentally ignites the gasoline. This is essentially the powers and weaknesses the protagonist of the first two ''VideoGame/InFamous'' games has.

** Sam from I-Island was greedy in canon, but here it was more extreme. Including a desire for glory, and feeling having worked for David Shield for six years on a project which was now to be discarded would ruin his career.

* AdaptationNameChange: Several of the hero student get different hero names than canon.

** Shigaraki loses both an arm and a leg at the USJ. The former by an AP shot from Bakugou and the latter because his leg was encased in ice when the former happened. The arm is destroyed beyond retrieval, and the leg abandoned.
** In order to kill the Nomu, Izuku unleashes his DangerousForbiddenTechnique, which [[spoiler:leaves him with a blackened husk of an arm that's more akin to charcoal than anything else. The following chapter, his arm is gone entirely, and he cannot regenerate it]].

** Similarly, Boarus is a villain with a boar based mutant Quirk.
* AntiHumor: During their date, Izuku anti's Camie's joke.

---> And then a beautiful girl with periwinkle hair hopped in, a bright, beaming smile on her face. "Hiiii!" She waved at them excitedly, "Nice to meet you all! I’m Nejire!"

* BoringButPractical: Shoji's go to move is sneak up behind people and grab them in a hug with his multiple arms so they cannot escape. Not at all flashy, but with his superior strength, it gets the job done. Nejire even counts it a win against her during her [[CurbStompBattle 'spar']] against 1-A, even if she shortly proves she could break out easily.
* BroughtDownToBadass: When a villain with a light Quirk disables Tokoyami's and Kuroiro's Quirks at the USJ, they still fight off several villains with improvised weapons and hand to hand combat.

* ColonyDrop: While fighting Bakugo and Aoyama in an old refinery, Ochako throws crucibles at them by first removing their gravity then increasing it past normal just before they leave her hands.

** While (most) of the villains at the USJ are placed in zones where they'll be at their best, the hero students are completely random in their placement. Inasa, Manga, Kaminari, and Mineta are near crippled by the zones they land in but Tsuyu, Kuroiro, Kinoko, and Tokoyami are all sent to the ideal zones for their Quirks. When brought up by the group in the Flood Zone, it's eventually decided that it was pure chance who got sent where.
** Shigaraki's severed arm lands in a puddle of molten rock caused by Izuku's Inferno Overdrive, instantly burning it beyond recovery or repair.

* CurbStompBattle: Once Izuku actually gets to fight Shigaraki at the USJ, it's completely one-sided. Izuku has plenty of combat training in with his Quirk and can fight without it in a pinch. Shigaraki is UnskilledButStrong and has to touch someone with all five fingers to use his Quirk on them, something Izuku can prevent with telekinesis.

** The USJ Nomu. Instead of being taken in alive for questioning, and then study once clear incapable of independent thought, is absolutely incinerated by Izuku.

* DeathDealer: An [[Manga/{{Hellsing}} Tubalcain Alhambra]] {{expy}} at the USJ wields cards which he can use to cut through even Kirishima and Kamakiri's Quirks.

** Momo utilizes first a gattling gun firing explosive bullets then a flamethrower filled with napalm against the Nomu. It fully recovers despite Momo almost completely depleting her fat reserves.

* {{Determinator}}: Even after being tortured with overuse of his Quirk to the point he's vomiting blood, Aoyama still manages one final shot in order to save his classmates.

* {{Foil}}:
** Todoroki has three:
*** The first is Momo. At the USJ, Momo and Todoroki both nearly died in their fights: him from refusing his fire, and relying solely upon his ice to the point he was called out multiple times for how stupid he was being; and her from going FAR beyond her limits and even burning herself using a flamethrower for the first time without thinking of her own protection. When we see them fight next, it is a second sparring match between the two where Todoroki continues to refuse to use anything but his ice, unleashing his biggest glacier he can manage. In contrast, Momo creates "a cross between a flamethrower and a flak cannon" which not only casually burns straight through the glacier, but her new protective features ensure she is not even mildly warm. She wins the match with laughable ease.
*** The second is Izuku. In the aftermath of the USJ, both were chastised for not using their Quirks to their fullest extents, Todoroki's being his fire which he still refuses to use weeks later, and Izuku for failing to mind crush the Nomu. When that is pointed out, Izuku points out it is not an ability he can safely practice, and had avoided using his telepathy much before due to concerns for the privacy of others. However, he quickly comes around to the necessity of using every tool available to him, and starts using it more and more in practice matches, and quickly uses it when face to face with actual villains, providing invaluable intel.
*** The third and final is Flect Turn, who considers his Quirk nothing more than a curse. His conviction already weakened by the arguments of his peers, hearing the insane cultist describe his own Quirk in such a familiar manner leads Shouto to embrace his fire and use it to help win.

** Toru somehow hid a glass-cutter on her person even though she's nude. Later averted when it's revealed she actually does have a costume and just likes to mess with her friends.

*** Momo uses up almost the entirety of her fat stores making first a minigun then a napalm launching flamethrower and finally a block of C4 for Izuku to use.

** Aizawa's main criticism for Ochako and Iida's actions during the Heroes vs. Villains exercise is that they continued fighting after they'd already guaranteed their victory rather than retreating and letting the hero team search pointlessly until time ran out.

** Toru's invisibility is worthless against Jiro's super hearing. Jiro's own weakness, loud noises drowning out all other sounds, is brought up but she already trained to overcome it by the time someone tried to utilize it.

*** Without his support equipment, his Quirk can't be aimed, only ever reflecting each attack back the exact direction it came from.

* LudicrousGibs: Trapping the USJ Noumu in a sphere of water then detonating a bomb inside with it reduces the thing to part of a skull with a bit of spine sticking out. [[OhCrap And then it starts healing]].

* ManOfKryptonite: Several villains at the USJ are near perfect counters for one or more students. Even if it was not something the villains had planned for.

** Mineta twice in chapter 5, both of which gets him expelled.

* NightmareFace: A villain with a spider Quirk at the USJ is described as having a face not even a mother could love with several red eyes taking up her forehead, a fang filled mouth that opens vertically, and no nose.

* NotTheFallThatKillsYou: Lampshaded by Juzo who notes that if Quirks followed actual physics, him softening the ground wouldn't matter as they'd still die from the height they fell from.

** As of chapter 9, Izuku is in a polyamorous relationship with [[spoiler:Momo, Camie, Mina, Setsuna, and Nejire]]. To avoid the pitfalls of the above example, the ladies try dating each other as well, and are indeed interested in one another. Although Momo is the only one unequivacably in love with Izuku by this point.

** In canon, Izuku and Mina, Momo, Setsuna are mere classmates, while Nejire is an upperclassman who rarely if ever interacts with those four, and Camie has never actually met any of them due to being replaced by Toga Himiko during her first appearance. Here, they are all friends at minimum and romantic interests. As of chapter 9, [[spoiler:all six of them are romantically involved in a polycule]].
** Kaminari and Kinoko end up dating while visiting I-Island, while in canon they were only acquaintences.

** Nedzu takes the safety of his students very seriously, with none of his usual joviality. Given the scope of the situation at the USJ, he and All Might share all they know to the other teachers so they can plan accordingly.

-->'''Momo:''' How are any of us supposed to feel good about winning when all you do is sit there and insult everyone giving it their all? ... You say you want to be the Number One without using your whole Quirk? Newsflash Todoroki-kun. You’re just as bad as Bakugō-san and his angry yelling and bullying. No one in their right mind would give someone like you a high rank. ... You'll never even break the top ten with your attitude. Inevitably your ice is not going to be enough, and you're going to let someone die to continue throwing your tantrum. You don't want to be a Hero. You just want to prove your father wrong about... whatever your issue is with him. But you never will. You're no different than him. No one needs a Hero who runs off '''spite'''.

'''Nejire''': We overwhelmed it! Just like every Quirk can be! No Emitter Quirk is permanently active. They all take energy to use! To control! They have to be trained and refined! Something you never did! You gave up on your Quirk! You never bothered to learn everything there was to know about it! You gained it and didn’t like what it did, so you threw yourself a pity party because of it! You never tried to overcome its weaknesses! You just gave up! You allowed IT to control YOU, and used your own fear to stoke the fear in others! You peddled an unproven theory as fact to feel better about yourself!

* RuderAndCruder: This fic's language is so much crasser and more sexual than canon, especially in high tense situations, that the only reason Bakugo is still SirSwearsALot is because he curses even when the situation doesn't call for it.

* ShipTease: Mina frequently cuddles Izuku, even referring to him as her "cuddle buddy" at one point, on top of him being one of only two people she's nicknamed. Meanwhile, Izuku and Momo tend to make eye contact then look away while blushing. After the USJ, this evolves to crushing him with hugs, her unconsciously holding his hand for comfort, and outright acknowledging she has a crush on him. Camie also gets in the game, pouting that Mina got "first kiss" when she pecks him on the cheek. Setsuna uses her Quirk to [[spoiler:"heal" Izuku's arm by attaching her own to his stump]]. It's acknowledged as adorable.

** During Momo's speech of how she refuses to leave Izuku to be the next sole Symbol of Peace, she makes a dig at Death Arms, Kamui Woods and Mount Lady for standing around not doing anything while Bakugo was being swallowed by the Sludge Villain because they didn't have the "appropriate Quirks". And this in spite of the fact that she cares little for Bakugo so it also overlaps with EveryoneHasStandards.
** A mild one is given towards how canon Izuku used One for All initially. [[spoiler:Momo]] initially only channels it into a single arm but immediately realizes that's a bad idea and spreads it throughout her body instead. After shattering (and having Izuku heal) her arm, she almost instantly determines she needs to lower the percentage of power. Both actions are something that took Izuku months to figure out in the original story.

** One of the reasons Izuku is so popular with his classmates, is because of his efforts to help everyone become even more powerful. At the Battle Trials he points out how effective Koji would have been if he had unleashed rats against his opponents, and at their group sessions leads similar conversations, which helps several of his peers make more progress with their Quirks in minutes than they have managed in ''years''.

*** The first is after the USJ attack from Aizawa, where the Pro Hero points out that Todoroki's stubborn refusal not only endanger himself, but also his classmates due to giving two villains more ammunition to work with. When Todoroki insists he "doesn't need [Endeavor's] fire", Aizawa fires back that clearly he doesn't need to be a hero either.
*** Momo gives another in a sparring match after the USJ, where she casually bests him while demonstrating how she has learnt from the battle while he has not, and then verbally tears into him.

* When the General Studies Course students complain about how their Quirks were unsuited against robots, 1-A is quick to point out how they should have trained up their bodies as well. Several members of their class had Quirks unsuited for direct combat.

* CantCatchUp: Due to his refusal to use his fire, after the USJ, Shoto blatantly starts falling behind the other heavy hitters in his class. While he's aware ''that'' he's being left behind, he also refuses to admit ''why''.

** Attempted by Kirishima who ignores Tsuyu and goes straight for the bomb. Sadly, her superior range and mobility let her keep the bomb out of his reach long enough for Jiro to capture him. He is still praised for the proper mindset.

* DieOrFly: Kirishima manages to figure out Unbreakable three seasons early to defeat a villain at the USJ who would have otherwise killed him and Kamakiri.

* DramaticIrony: Kirishima remarks that Todoroki could defeat a USJ villain with a paper Quirk easily due to the fire part of his Quirk. What he doesn't know is that Todoroki refuses to ever use his fire in combat, not even to save his own life.

* FateWorseThanDeath: Parodied. Momo unconsciously makes a knife while saying that she's first going to kill Katsuki, and then have him expelled. Then again, Katsuki would very likely consider expulsion life-ending, so she might just be doubling down.

** Because of a chance meeting with Izuku, Inasa is convinced to not reject his acceptance into U.A. when he gets offended by Shoto.

* IDidWhatIHadToDo: Kirishima broke off a villain's leg at the USJ, something he's not proud of but admits he had to in order to save his friends.

* {{Irony}}: Todoroki, one of the strongest members of Class 1-A is also the only student at the USJ to completely fail to defeat his villain, with even Mineta managing a temporary victory.

* LikeFatherLikeSon: Part of how his classmates get through to Shoto is by pointing out that he's acting almost exactly like his father, for all he doesn't want to be anything like the man.

* MyGodWhatHaveIDone: Todoroki is horrified when he loses his temper and lashes out with a massive amount of ice during the Heroes vs Villains exercise. Even with his quick action melting the ice, he still badly injured his classmates, including breaking several of Camie's ribs. Afterwards, the one thing keeping his reputation above Bakugo's is that he obviously didn't intend to go as far as he did and was disgusted with himself.

* NotSoDifferentRemark: During her TheReasonYouSuckSpeech to him, Momo states that for all Shoto wants to prove his father wrong, he never will because he's just like the man.

** Most of the students fall to the ground after finally defeating Humarise and Wolfram.

* DoorStopper: Like Vortex's other fics, this one has a ridiculous word count per chapter, averaging out at just over 25,000 words per chapter, give or take an additional few dozen from the author's notes. It is, in fact, a contributing factor for the long periods between updates, along with what he considers an uncooperative muse.

** Momo utilizes first a gatling gun firing explosive bullets then a flamethrower filled with napalm against the Nomu. It fully recovers despite Momo almost completely depleting her fat reserves.

* LonelyAtTheTop: Discussed. Momo realizes that the biggest problem with All Might being The Symbol of Peace is that he's ''The'' Symbol of Peace, meaning that many heroes don't even try to catch up to All Might in deeds and actions, making him the lone pillar. And his dropping appearances has started to show its consequences by a slow but steady uptick in crime due to the resulting BystanderSyndrome and AllUpToYou attitudes that have infected Pro Heroes. [[spoiler:By accepting and becoming the Ninth Bearer of One for All, she plans on subverting this trope by standing right next to Izuku at the top.]]

* OOCIsSeriousBusiness: Whenever Izuku or Momo start swearing.
* PercussivePrevention: Melissa makes her point about Momo's shelf and dictionary on her costume by grabbing said shelf and shoving it into her back. While Momo's initially upset by the action, Melissa gets her to think about what would happen if she ''landed'' on the shelf during a fight, causing her to realize her costume is liable to break her spine.

* PoseOfSupplication: Toshinori takes a full dogeza pose while apologizing to Izuku for foolishly wasting his time the morning of the USJ attack.

** All Might comes off as this much more than canon.
*** His telling Izuku he could not be a hero without a Quirk was more because he saw the boy had no physical conditioning to try and offset it, and was thus deluding himself.
*** When they found that Izuku did have a Quirk, he took him to Recovery Girl and Nedzu to try and understand his Quirk more.
*** In the Battle Trials, he personally intervenes whenever a student (Bakugo and Todoroki) take things too far, and makes clear their behaviour is inexcusable.
*** When searching for a successor, he carefully studies the various candidates, with the USJ offering excellent insight; he also concludes that the particulars of Mirio's Quirk would make it too dangerous to give him One For All, just like with Izuku.
*** During the I-Island Crisis, while like canon he gives the students permission to act, he not only takes the time to designate mission parameters, he also specifies their leadership hierarchy, highlighting how closely he has been paying attention to his students' capabilities. In the aftermath, he takes the time to praise them all for their accomplishments.

** One of the reasons Izuku is so popular with his classmates, is because of his efforts to help everyone become even more powerful. At the Battle Trials he points out how effective Koji would have been if he had unleashed rats against his opponents, and at their group sessions leads similar conversations, which helps several of his peers to make more progress with their Quirks in minutes than they have managed in ''years''.

** At the USJ, the villains ''badly'' underestimated the students they would be up against. They were anticipating a fun experience torturing and murdering terrified teenagers. Instead, those who were not fortunate enough to be curb-stomped, ended up hospitalized, sometimes with crippling injuries. Shigaraki was outright maimed.

** Izuku and Momo realize that they, All Might, and everyone else in the know had actually been doing this with One For All. While All Might had spent the last six years becoming progressively weaker, the Stockpile Quirk had only continued to gain in strength. Indeed, a key reason nobody had caught on All Might's power was dwindling, was how even while he could only use increasingly little power, that percentage was of an increasingly ''stronger'' power. To the point that Momo's 100% is already ''significantly'' greater than All Might's in his ''prime.''

** For the rest of the students they learn just how far they are willing to go in order to defeat their enemies. Some cripple them and regret it, while Bakugo is sickened to realize the satisfaction he took in doing it to his opponent. Aoyama is suffering horrible internal injuries, and no one would fault him for staying out of the rest of the fight, yet risks further damage to save his classmates. Meanwhile, Izuku proves he is willing to die if that is what it takes to take down the Nomu and save the others.

* YouHaveGotToBeKiddingMe: Midnight asks if Bakugo is messing with her when he proposes a hero name with Murder in it.

** Due to Camie, who along with Tooru, having a Quirk with little combat utilization and Melissa, a [[{{UnSorcerer}} Quirkless individual]] being Hero Course students, Class 1-A is a lot less sympathetic to the General Studies students for not making it in. In fact, Class 1-A use the blaming of their Quirks as a basis for their TheReasonYouSuckSpeech towards the former.

** Shouto is [[WesternAnimation/TheIncredibles Frozone]].

* NoSell:
** Kaminari amusedly ignores Flect Turn reflecting his electrical attack back at him, due to being immune to electricity.
** Mina's Acidman technique lets her ignore Beros's attacks as the arrows are melted before they even reach her.
* NoSocialSkills: Momo is a downplayed example, completely missing Denki's innuendo when they're teamed up, and unintentionally flaunting her wealth to her friends. For the latter, everyone can tell it is not intended boasting on her part, so they do not take offense.
* NoodleIncident: Apparently, eating All Might's hair isn't the grossest thing Momo's ever eaten, having eaten some rather nasty ForeignQueasine at some high-class dinner parties she had to attend. It was the only time she was ever truly been angry at her parents.

* NotSoAboveItAll: While Izuku is exasperated by their antics, he still does [[Manga/JoJosBizarreAdventure JoJo poses with Mina and Camie while Kyoka plays the Pillar Man song with her Quirk]].

* OOCIsSeriousBusiness:
** Whenever Izuku or Momo start swearing.
** You know a secret is serious when Inasa knows it and has actually kept it quiet.
* PeoplePuppets: After Kaminari's attack fries Izuku's nervous system, he uses his telekinesis to control his own body.

* PlugNPlayFriends: Setsuna and Mina become great friends almost instantly due to their similar senses of humor.

* PowerIncontinence:
** The reason Izuku can't risk inheriting One For All is the possibility that it would merge with his telekinesis and put him in a world of cardboard.
---> '''Nezu:''' He would be breaking things with even the slightest touch of his Quirk. Crushing full trucks into soda cans. Picking people up to rescue them and putting them on the moon! How could he possibly learn control when even the lightest touch could be enough to send something he struggles with now straight into orbit? He could never use his Quirk again! He'd be back where he started! For all intents and purposes… Quirkless.
** It took Izuku getting purposefully injured by All Might to learn how to activate his HealingFactor at will. In addition, due to it being CastFromStamina he also had to learn how to ''not'' let it activate when he didn't want it to.

* PrecisionFStrike:
** When the evacuation alarm sounds during lunch, several students are almost trampled, causing Izuku to freeze everyone in place and start yelling at them.
--->'''Izuku:''' WHAT THE '''FUCK''' ARE YOU ALL DOING?! ARE YOU HEROES IN TRAINING OR A BUNCH OF STAMPEDING IDIOTS?! CAN'T YOU SEE YOU'RE HURTING EACH OTHER?! YOU ALMOST CRUSHED ONE OF MY CLASSMATES!
** When the USJ Noumu heals from being blown up into LudicrousGibs, Izuku lets out another one.
--->'''Izuku:''' Are you fucking SHITTING ME?!

* {{Psychometry}}: While on a date with Setsuna, a question by the girl gets Izuku to discover he can use his Quirk to read the past of objects. They promptly start viewing the past of every dinosaur they can find, provided one of its actual bones are present rather than just casts.

* SaveTheVillain: Inasa attempts to stop Blazing-chan from using her DeadlyUpgrade once he realizes it's cooking her from the inside. Even after defeating her, he's near tears from the fact she's been permanently crippled.

* SpoiledSweet: When planning to hang out at her house, Momo asks what everyone's favorite tea is and offers to have the butlers run to the store to buy it if she doesn't have it in stock.

* StrongerThanTheyLook:
** Despite having little visible muscles, Momo easily lifts two adult sized robots without even a hint of effort. She also hefted and fired a minigun for a prolonged period at the Nomu at USJ. {{Lampshade|Hanging}}d between All Might when [[spoiler:discussing her suitability to be the next wielder of One For All,]] as he worries she lacks the muscle mass, and Izuku flatly points out what she can do.
** Nejire is also very muscular, but it is not apparent until she flexes. She cites it as a consequence of her friendship with Mirio.
* SuperpowerLottery: Izuku is a psychic who initially has only telekinesis and healing flames but by the entrance exam has also gained telepathy and teleportation, giving him power at least on par with Todoroki and similar versatility to Momo.

* TaughtByExperience: After badly burning herself when using a flamethrower at the USJ, the next time she creates one, Momo also creates a shield of transparent aluminum coated in aerogel to protect herself. As well as a more powerful, and more carefully thought-out weapon.
* TechnicolorFire: Izuku's healing flames are blue in color, while the ones from his Inferno Overdrive are green.

* TopWife: Momo is the first of Izuku's girlfriends to openly admit she loves him along with having the best synergy with him, establishing herself as the "main" girl. Downplayed some as their relationship is a polycule rather than a harem. Still, she tends to be the one to keep the others in line, especially when they are getting too horny, generally by a light smack over the head. In particular, when Yui expresses an interest in Izuku, Momo intervened before Mina or Setsuna could finish considering inviting her into their polycule as well.
* TranquilFury: After learning that Bakugo once told Izuku to "take a swan dive off a roof", Momo declares she's going to kill him then have him expelled, all while fiddling with a knife she didn't even realize she'd created.
* TraumaticSuperpowerAwakening: Izuku's telekinesis first awakens when he desperately tries to save Bakugo from the Sludge Villain. His healing activates shortly after when said villain stabs him in the shoulder.

* UnholyMatrimony: Two USJ villains, Alkali and Hydrodynamic, are stated to be married, though they do playfully bicker with each other.

* WhatIsThisFeeling: Momo is surprised to find herself jealous of Mina when the latter cuddles Izuku.

* WillfullyWeak: Mina holds back when creating her acid, citing that her strongest acid is dangerous even to her and she can shower with acid that others need a hazmat suit to even approach.

* YinYangBomb: Izuku attempts this by combining his healing flames with his telekinesis. All he accomplishes is painfully setting himself on fire.
* YouAreBetterThanYouThinkYouAre:
** Momo starts doubting herself after Izuku defeats her, only for both Izuku and All Might to list everything she did during the Heroes vs Villains exercise, with Izuku insisting she be named MVP of the match.
** Momo gets another dose when everyone is discussing their Quirks and she's reassured that unless she had a brain-enhancing Quirk, it'd be impossible for her to remember formulas to create objects faster than she already does. The others also point out that Momo not only made a fully charged battery but a pair of drones and tablets that were already fully programmed when she created them.
** After a day of rescue training All Might assures Izuku that he's far more than his Quirk, insisting that Izuku was always meant to be a fantastic hero and that one day he'll be "the best of us".
* YouAreNotAlone: Momo's reason for [[spoiler:accepting One For All]] is that she doesn't want Izuku to be forced to stand alone at the top like All Might was.

* CrazyPrepared:
** Before the Heroes vs Villains exercise, Momo creates a pair of drones with optional x-ray cameras so she and Kaminari can scout the area for the villains' team. She also creates a large battery as a last-ditch resort for Kaminari, coats her staff in plastic so Mina can't melt it, and [[ArsonMurderAndJaywalking wears pasties under her costume in case she has to open it fully to create something]].
** The League of Villains have several Noumu attack UA during their attack on the USJ as a distraction.

* CuddleBug: Mina has a thing for hugging people, Izuku in particular.

* CuteBruiser: Nejire is absolutely adorable and smaller than most of the class. She's also capable of taking out most of them with minimal effort and the rest only require she take them seriously.
* DangerousForbiddenTechnique: Combining Izuku's healing flames and telekinesis creates a fire so hot that water evaporates without even touching it. It also set him on fire and taught Izuku, during the USJ, that while he ''is'' actually fireproof, his Emerald flames '''''simply don't care'''''. After All Might puts him out, Izuku's warned to never even attempt that technique again without close supervision. He's forced to use it in order to kill the USJ Nomu before it kills them.

* DeterminedDefeatist: All Might praises Momo for this attitude during the Heroes vs Villains exercise after her partner is eliminated, declaring that like all heroes, she faced a situation where she seemingly had no hope of winning but pressed on anyway. While she lost, Momo still came within a hairsbreadth of victory.

* DoesNotKnowHisOwnStrength: The first time Izuku deliberately uses his telekinesis, he tries to lift a salt shaker and accidentally sends it through the roof.
** It's revealed that the harder Izuku pushes himself and his Quirk the stronger it gets, so after the USJ, he uses ''much'' less power to try and grab a plastic cup after he's allowed to use his Quirk again and nearly crumples it, showing that he'll have to use even more control exercises to not accidentally crush whatever he attempts to psychically grab.

** During th eattack on I-Island, Kinoko doesn't have her fungicides with her. Unfortunately, Momo can't simply make her some as she doesn't know the chemicals needed and her new suit's database is unavailable due to the villains controlling every satellite.

* EndearinglyDorky:
** Iida's attempts to act villainous only make Ochako giggle.
** Momo is somewhat socially inept but others, especially Izuku and Mina, find her enthusiasm adorable.

* EveryoneHasStandards: In the aftermath of the USJ, Katsuki makes a point of looking away when he realizes that Momo is completely topless.

* FellAsleepStandingUp: A dramatic example. The battle against the USJ Noumu exhausts Izuku to the point he passes out on his feet.

* FingerPokeOfDoom: Nejire defeats Katsuki with a single blast of her Quirk, delivered through poking his nose.
* FirstNameBasis: Mina is quite insistent others call her by her first name, as is Camie.

** Bakugo and Setsuna. Both were born with powerful and versatile Quirks, want to be heroes, are highly intelligent, and went to schools where there was a Quirkless peer. Bakugo regularly abused and bullied his Quirkless classmate, and had a spotless record, while Setsuna had ''nineteen'' suspensions on hers for defending her Quirkless classmate from being bullied.

* ForgotAboutHisPowers:
** Izuku admits that after his match in the Heroes vs Villains exercise, he simply forgot to use his healing flames and went to Recovery Girl instead.
** In chapter 9, Izuku admits he hasn't focused very much on his telepathy because he views it as an invasion of privacy to read people's minds and anything more intensive would be exceedingly dangerous to attempt. Nejire calls him out on such thinking, insisting that a proper hero has to use ''everything'' in their arsenal. Later, on I-Island he is actively using it to the benefit of the group.

* GoodThingYouCanHeal:
** Izuku gets injured almost as frequently as he does in canon. But because he has his own HealingFactor, it's usually less of a problem.
** The USJ Noumu gets sliced, shot, melted with acid, set on fire with napalm, blown up, and finally completely incinerated before it's put down for good.

* HealingFactor: Izuku can create healing flames to regenerate but it seems to have a minimum amount of damage it can heal. All Might has to break one of Izuku's arms for the boy to activate it. By the time he enrolls in U.A., Izuku can activate it at will but it no longer activates automatically.
** HealingHands: In chapter 8, Izuku learns on accident that his healing flames also work on others, but much less efficiently than on himself.

* {{Hellfire}}: Though not actually infernal in nature, Izuku's Inferno Overdrive qualifies. Besides the flames being green in color, they seem to burn without any fuel, outright incinerate anything that should be fireproof, clothing or otherwise, in an instant, and are hot enough to ''boil a lake'' from a considerable distance, and going from the anime that distance could be anywhere between '''30-50 meters''', considering that Izuku uses his Inferno Overdrive somewhere near the center of the USJ.

** Destroying the Zero Pointer overloads Izuku's Quirk, to the point he feels like his brain has been shoved in a blender.
** A milder example occurs when Izuku freezes everyone in the cafeteria. After he's done lambasting them, Izuku collapses to the ground.

* HiddenDepths: Momo is a fan of comic books and mentions the PstandardPsychicPstance by name.

* HollywoodAcid: Mina can create acid that will eat through anything, but it's both very tiring and too dangerous to use in a training exercise. However, using it also overwhelms her own natural resistance to it. When she finally does use it in the USJ, the Nomu ''melts'' while she suffers burns which take her arms out of action. She still manages to get some bad burns on Shigaraki though, thanks to some tag-teaming with Tokage and shooting acid out of her feet.
* HollywoodDensity: Momo mentions that her body's much denser than normal and she actually weighs almost triple what someone her size should.

* HowTheMightyHaveFallen: Bakugo entered UA expecting to be the top dog as he was back in middle school, only to face failure after failure. Not only do his peers continue to best him in class, they constantly insult him to his face, refuse to be intimidated by his attitude, and never follow his lead even when he has a good idea.

* IAmNotLeftHanded: During her spar against Class 1-A, Nejire spends most of the fight manhandling them. But once they prove capable of fighting back, her energy engulfs her as she switches to "version 2" and overwhelms them once more.

* INeedAFreakingDrink: A G-rated version. After [[spoiler:learning the truth about All Might and One For All on top of being offered One For All]], Momo says she'd really like that tea All Might offered her earlier.
* InnocentlyInsensitive: Subverted. Momo unintentionally flaunts her wealth to her classmates but they find her too adorable to be offended by it.
* InsistentTerminology: Izuku and his girlfriends are a polycule, not a harem. The girls are romantically involved with each other as much as they are with Izuku, after all.

* LeeroyJenkins: Inasa has a problem with charging headfirst into a fight without thinking about his teammates, something he gets lectured for multiple times.
** During the Heroes vs Villains exercise, Inasa charges in the moment his partner Koda determines where the other team is, causing Koda to be left behind and captured by Shoji.
** Then during the USJ incident, he rushes to fight Blazing-chan away from his classmates, even though Reiko had already been injured. In the aftermath, the teachers admit they aren't sure he was necessarily ''wrong'' to do so but his reasoning, wanting to fight a particularly strong opponent, was.
* LightningBruiser: Despite being [[CuteBruiser shorter than most of 1-A]], Nejire can tank attacks from any of them, overpower Shoji in raw strength, and move and react fast enough to punch Izuku mid-teleport. Only three students manage to land a good enough hit to "win" against her: Shoji and Camie through trickery and teamwork, and Kyoka catching her off-guard with one of her sonic attacks.

** Mina's acid is extremely corrosive but can't dissolve plastic, which Momo takes advantage of by coating her staff with plastic before engaging her. Subverted when Mina later admits she can make HollywoodAcid if she pushes herself, but she felt it was too dangerous to do so for a training exercise.

** Because warm air rises, Inasa has trouble controlling his wind in the Conflagration Zone where he's surrounded by fires.

** While Izuku can heal from nearly any injury, he still feels pain. A sufficiently painful injury can leave him near helpless as a result.

* LonelyRichKid: The idea of her classmates coming to her house has Momo thinking to herself that she "feels like she finally has friends".

* MasterOfNone: The prospect of becoming this is part of why Izuku doesn't get One For All. Izuku's own Quirk of telekinesis and telepathy has no common ground with One For All's super strength and toughness, which means, as Nedzu put it, Izuku would either have to forsake one Quirk to focus on the other or work on each and be mediocre at both.
--> '''Nezu:''' And that is the ''better'' scenario. The worst-case scenario is that '''One For All''' ''merges'' with his original Quirk. All of the stockpiled power stored in your Quirk, now powering ''his''.

* MundaneUtility:
** As part of having to practice his telepathy, Izuku learns formal dancing by linking his mind with Momo's.
** During a day at the beach, Izuku uses his pyrokinesis to light several fireworks fuses at once. Similarly, about half of the students present use their Quirks for a volleyball game after Katsuki starts using his.
** Mina mentions using a mild variant of her acid to prevent ever getting morning breath. Similarly, Momo uses her quirk to create breath mints after realizing her boyfriend and girlfriends all have morning breath when they try to kiss.

* MyGodWhatHaveIDone:
** Todoroki is horrified when he loses his temper and lashes out with a massive amount of ice during the Heroes vs Villains exercise. Even with his quick action melting the ice, he still badly injured his classmates, including breaking several of Camie's ribs. Afterwards, the one thing keeping his reputation above Bakugo's is that he obviously didn't intend to go as far as he did and was disgusted with himself.
** After Kirishima's WhatTheHellHero towards him at the USJ, Bakugo is gradually horrified at the sheer damage he did to his opponent.

* NoConservationOfEnergy: Downplayed in that Momo's Creation Quirk needs her lipids to create objects that she knows the molecular structure of, but at the same time, a lot of the items she makes have significantly more mass than a 15-year-old, even one who is [[HugeSchoolgirl 173cm]][[labelnote:*]]about 5'8[[/labelnote]] [[HugeSchoolGirl tall]] and well-shaped, should have. Of course, she ''can'' suffer a HeroicRROD and become horrifically emaciated if she overuses her Quirk. [[spoiler:Turns out that Momo's Quirk actually works as a sort of sci-fi MatterReplicator and only uses her lipids as fuel rather than the converting into the atoms needed. Not only that, [[RequiredSecondaryPowers but Momo is actually]] [[HollywoodDensity heavier than she looks, weighing nearly more than triple someone with her body type should weigh, meaning that her mass might actually be very densely packed]].]]

* AbsurdCuttingPower: Izuku's psychic blade can cut through anything, including the Zero Pointer and the ground beneath it, creating a canyon on the testing grounds.

** Nejire is introduced before the sports festival.

* AdaptationalModesty: Momo's second costume, while still revealing in Creation Mode, notably doesn't show any cleavage. In Full Armaments mode, it covers her entire body.

** Izuku is a psychic possessing {{Telepathy}}, [[MindOverMatter Telekinesis]], {{Teleportation}}, and blue flames that heal him. All Might is dissuaded from giving Izuku "One For All" anyway, because not only would the conflicting natures of the Quirks force him to either be subpar in both or ignore one in favor of the other, but it also increases the risk of "One For All" mutating unexpectedly into a power so overwhelming Izuku could never hope to contain it.
** Bakugou can detonate his explosive sweat from anywhere on his body rather than just sweat from his hands.

** Momo can further alter items she creates so long as she doesn't let go of them.

** Nejire's power is much stronger than in canon, though retaining similarities. She can make her spirals much, much tighter than in canon, for precise and directed attacks. She can strengthen her body with her energy, and at higher levels of output can even mimic Izuku's psychic barriers to a degree. The stronger and fitter she is, and the more stamina she has, the higher her output can be.

** Izuku is the Cosmic Hero: Eon.

** Momo is [[Myth/JapaneseMythology Izanami, the Creator]].

** Mina is Amina Acid.

** Camie is [[Myth/ClassicalMythology Discordia]].

** Nejire's hero name is Spiral-chan rather than Nejire-chan.
** Setsuna is Automata.

** Izuku and Inasa are best friends rather than being basically nonentities to one another.

* AgeLift: A mild case. Camie is a year younger than canon, being fifteen rather than sixteen.
* AmbiguouslyBi: Momo, who lampshades that while she's attracted to the female form, she's unsure if it's actual bisexuality or simple bi-curiosity. [[spoiler:As of chapter 10, it is no longer ambiguous as she's in a polycule]]

** The USJ Noumu stomps on Izuku's leg, breaking it off at the knee. He gets better.

* ArmorPiercingResponse:
** Todoroki receives one from Aizawa after the USJ attack when the hero is lambasting him for his actions.

** During his RousingSpeech to Shoto, Inasa points out the flaw in his idea of spiting his father by functionally doing what the man wants.
-->'''Inasa''': I don't know what your problem with him is, but all you've done is tell us that you want to become a top Hero without his fire. If you really wanted to spite your father, you'd become a hermit and never use your Quirk at all. As it is, he gets what he wants regardless of whether you use your full Quirk or not.
* ArtificialLimbs: [[spoiler:After losing an arm to his DangerousForbiddenTechnique, Izuku eventually creates an artificial one by making a psychic barrier in the shape of an arm around his healing flames]].
* AscendedExtra: Inasa and Camie join U.A. in Class 1-A in place of Mashirao and Rikido due to the author finding the former pair much more interesting than the latter. Inasa also befriends Izuku while the latter is training under All Might.
* AtomicFBomb: Izuku's shouted "Fuck" is loud enough to be heard over the evacuation alarms going off when the press get onto the school grounds.
* BadassAdorable: Nejire. Just... Nejire. She's as cute as a button and casually ''destroys'' Class 1-A during their spar. Among other things, she:
** One-shots Katsuki, one of the stronger members of the class.
** Casually destroys a glacier from Shoto. When he tries it again, she drills through it and manhandles him.
** Rips apart Sero's Phoenix-Force-Reinforced tape and casually slings him across the room with one hand, while apologizing sheepishly for a comment.
** Senses an invisible Camie and dodges a kick from her.
** Outmuscles ''Shoji'', who can have as many muscles as he wants.
** Outspeeds Momo [[spoiler:at her current One For All limit]] so badly she can't even react to it.
** Predicts and outspeeds Izuku after a teleport escape. As in, he teleports, and before he's even fully reformed, she's punching him in the gut.
* BadLiar: Momo is ''terrible'' at lying about [[spoiler:One For All]], to the point her friends suggest she just tell them it's a secret rather than try to make something up. Made worse for her, as she feels experienced at it due to various public appearances she has had to make for her family, but apparently unable to do so with her friends. However even Todoroki is poking holes in it, as [[spoiler:One For All behaves entirely differently from her original Quirk, so cannot be related as she and Izuku are claiming.]] On I-Island, her friends also note her story is inconsistent. [[spoiler:When she blurts out a vital clue when in (entirely justified) pain, she and Izuku realize the jig is up, and get telepathic permission from All Might to just tell the truth.]]

* BattleAura: When Izuku makes a DeclarationOfProtection against the League of Villains at the USJ, a ghostly image of All Might appears behind him.
-->'''Izuku:''' You won't touch them. You won't harm any of them! BECAUSE '''I AM HERE!'''

* BewareTheNiceOnes:
** Momo is a sweet, sheltered little princess, generally missing the darker or cruder stuff in others. She is also walking arsenal of increasingly sophisticated and deadly weaponry, and ''will'' resort to lethal force if necessary. When she learnt that Bakugo had suicide baited Izuku once, she created a knife without even realizing it.

* BloodFromEveryOrifice: Pushing his Quirk far beyond what he should at the USJ causes Izuku to start bleeding from every orifice on his head.

* BroughtDownToBadass:
** When a villain with a light Quirk disables Tokoyami's and Kuroiro's Quirks at the USJ, they still fight off several villains with improvised weapons and hand to hand combat.
** [[spoiler:After the USJ attack, Izuku is left without a right arm and unable to use his Quirk for three weeks]]. Despite this, he's still one of the best in his class during rescue training, with All Might outright saying to his face that even if Izuku had come to UA as a Quirkless applicant, he would have grown up to be one of the best heroes of all.

* CastFromStamina: Izuku's healing is physically draining, though he does note that Recovery Girl's Quirk is much more draining than his own. On the other hand, healing others drains him about as much as Recovery Girl's Quirk does.
* CasualKink: After Mina playfully spanks her, Nejire is very open about how much she enjoyed it.
* CharacterDevelopment: Several of the characters have already shown a bit of personal growth.
** Izuku has already grown quite a bit as a person. While he is still recognizably the Adorkable cinnamon roll from canon, his early friendship with the boisterous, HotBlooded Inasa Yoarashi as well as the relatively early development of his own Quirk has given him some much-needed confidence. He is far more comfortable in his own skin and much more willing to speak out and put himself forward. He even manages to break out of his shell a little bit with the ladies of the class. He even accepted FirstNameBasis with Mina Ashido (though it took some trying on her part), Tsuyu Asui, and eventually Momo Yaoyorozu. He still blushes iridescent when Mina decides to tease him or get cuddly.
** Inasa has reined himself in a bit through his friendship with Izuku and occasional tutelage under All Might. Izuku is able to talk him out of rejecting his U.A. acceptance over his issues with Shoto Todoroki.
** Momo blossoms under the positive reinforcement her new (and first) friends provide her, particularly Izuku, and grows increasingly into a strong and confident young woman who will not be shaken by any failures.

* CluelessChickMagnet: Being a harem fic, Izuku is beginning to gain the notice of his female classmates (Momo, Mina, and Camie in particular).

* ColdFlames: Izuku's healing flames are cool to the touch and can't burn anything. His love interests find touching it to be particularly arousing.
* ColonyDrop: While fighting Bakugo and Aoyama in an old refinery, Ochaco throws crucibles at them by first removing their gravity then increasing it past normal just before they leave her hands.

* ComboPlatterPowers:
** Izuku's Quirk grants him (as of the post-USJ arc) telekinesis, telepathy, teleportation, psychometry, and healing flames. He can also combine the healing flames and telekinesis into a DangerousForbiddenTechnique that incinerates everything.
** Also Deconstructed by Nezu, who points out that One for All is so different from any of Izuku's other abilities that mastering both [=OFA=] and his natural Quirk would be impossible. For very similar reasons, Mirio is rejected as a candidate for his own good.

* CorruptTheCutie: Downplayed. Momo notes she's been swearing more ever since she became friends with her boyfriend and especially her girlfriends, and has started watching some anime and abridged series that are particularly gruesome and she had never been interested in before. She even quotes WebVideo/HellsingUltimateAbridged at one point.

* RoleReversal: A minor one in regards to Bakuō and Todoroki. After the Heroes vs Villains training, the former got called to the carpet for attempting to maim his classmate while Todoroki got off relatively light due to acknowledging his loss of control injuring Camie and Toru. After the USJ Incident, it's ''Todoroki'' that's getting chewed out for not using the fire half of his quirk, once again endangering Toru's life, while Bakugō doesn't seem to get too much attention from brutalizing his opponent and his enjoyment of it due to having a delayed [[MyGodWhatHaveIDone negative reaction]] towards it.

** Also at the USJ, Izuku's Inferno Overdrive melts pretty much everything nearby, including the ground, and boils part of the lake.

*** The first is Momo. At the USJ, Momo and Todoroki both nearly died in their fights: him from refusing his fire, and relying solely upon his ice to the point he was called out multiple times for how stupid he was being; and her from going FAR beyond her limits and even burning herself using a flamethrower for the first time without thinking of her own protection. When we see them fight next, it is a second sparring match between the two where Todoroki continues to refuse to use anything but his ice, unleashing his biggest glacier he can manage. In contrast, Momo creates "a cross between a flamethrower and a flak cannon" which not only burns straight through the glacier with casual ease, but her new protective features ensure she is not even mildly warm. She wins the match with laughable ease.
*** The second is Izuku. In the aftermath of the USJ, both were chastised for not using their Quirks to their fullest extents, Todoroki's being his fire which he still refuses to use weeks later, and Izuku for failing to mind crush the Nomu. When that is pointed out, Izuku points out it is not an ability he can safely practice, and had avoided using his telepathy much before due to concerns for the privacy of others. However, he quickly comes around to the necessity of using every tool available to him, and starts using it more and more in practice matches.

** All Might comes off as this much more than canon. His telling Izuku he could not be a hero without a Quirk was more because he saw the boy had no physical conditioning to try and offset it, and was thus deluding himself. When they found that Izuku did have a Quirk, he took him to Recovery Girl and Nedzu to try and understand his Quirk more. In the Battle Trials, he personally intervenes whenever a student (Bakugo and Todoroki) take things too far, and makes clear their behaviour is inexcusable. When searching for a successor, he carefully studies the various candidates, with the USJ offering excellent insight; he also concludes that the particulars of Mirio's Quirk would make it too dangerous to give him One For All, just like with Izuku.

** Shouto is Frozone.

* {{Foil}}:
** Todoroki has three:
*** The first is Momo. At the USJ, Momo and Todoroki both nearly died in their fights: him from refusing his fire, and relying solely upon his ice to the point he was called out multiple times for how stupid he was being; and her from going FAR beyond her limits and even burning herself using a flamethrower for the first time without thinking of her own protection. When we see them fight next, it is a second sparring match between the two where Todoroki continues to refuse to use anything but his ice, unleashing his biggest glacier he can manage. In contrast, Momo creates "a cross between a flamethrower and a flak cannon" which not only burns straight through the glacier with casual ease, but her new protective features ensure she is not even mildly warm. She wins the match with laughable ease.
*** The second is Izuku. In the aftermath of the USJ, both were chastised for not using their Quirks to their fullest extents, Todoroki's being his fire which he still refuses to use weeks later, and Izuku for failing to mind crush the Nomu. When that is pointed out, Izuku points out it is not an ability he can safely practice, and had avoided using his telepathy much before due to concerns for the privacy of others. However, he quickly comes around to the necessity of using every tool available to him, and starts using it more and more in practice matches.
*** The third and final is Flect Turn, who considers his Quirk nothing more than a curse. His conviction already weakened by the arguments of his peers, hearing the insane cultist describe his own Quirk in such a familiar manner leads Shouto to embrace his fire and use it to help win.
** Bakugo and Setsuna. Both were born with powerful and versatile Quirks, want to be heroes, are highly intelligent, and went to schools where there was a Quirkless peer. Bakugo regularly abused and bullied his Quirkless classmate, and had a spotless record, while Setsuna had ''nineteen'' suspensions on hers for defending her Quirkless classmate from being bullied.

** Aizawa's main criticism for Ochako and Iida's actions during the Heroes vs Villains exercise is that they continued fighting after they'd already guaranteed their victory rather than retreating and letting the hero team search pointlessly until time ran out.
** At the USJ, Todoroki would rather die than use his fire against two villains whose Quirks are a hard counter to his ice, something Hagakure [[WhatTheHellHero chews him out over]].

*** What finally makes it stick is two conversations with his peers during the crisis on I-Island, as they drive home how he is behaving so much like Endeavour and Flect Turn.

* HollywoodAcid: Mina can create acid that will eat through anything, but it's both very tiring and too dangerous to use in a training exercise. However, using it also overwhelms her own natural resistance to it. When she finally does use it in the USJ, the Nomu ''melts'' while she suffers burns which take her arms out of action. She still manages to get some bad burns on Shiaragki though, thanks to some tag-teaming with Tokage and shooting acid out of her feet.

* ArmorPiercingSlap: Hagakure gives one to Todoroki after she realizes he would have let the villains kill him or his classmates before using his fire.

* AdaptationalBadass:
** Several of the {{mooks}} at the USJ are strong enough to nearly kill the students, as opposed to canon where they amounted to a RedShirtArmy.
** Melissa Shield proves to be a tech-based BadassNormal rather than simply a GadgeteerGenius, functioning as a frontline fighter during the attack on I-Island.

* BadassNormal: Melissa Shield. [[spoiler:Using her non-Quirk enhanced intellect, engineering prowess as well as the inspiring words of All Might and the polycule, Melissa rather than just being support during the events of I-Island, becomes a frontliner using a nanotech suit in the design of [[Franchise/{{Metroid}} Samus' Zero Suit]], that has all the armaments of an [[Franchise/MassEffect N7 Paladin Sentinel.]] All Might even notes that he will ask Nezu as well as pull some strings to get her into U.A.'s Hero Course.]]

* HeldBackInSchool: [[spoiler:Justifed and exaggerated. Melissa will be joining the Hero Course two years late, so she has none of the necessary experience to be a second-year hero student, let alone a third year as she would normally be. Thus, she will be in 1A for any heroics courses, filling Mineta's empty seat. It should be noted that this only extends to her heroics courses, her regular classes will still be at her actual level.]]

* TearsOfJoy: After All Might admits he was wrong about his old idea that one couldn't be a hero without a Quirk and specifically insists that, if she wants, she'd be an amazing hero, Melissa breaks down crying over having someone finally believe in her.

* HeldBackInSchool: [[spoiler:Justifed and exaggerated. Melissa will be joining the Hero Course two years late, so she has none of the necessary experience to be a second-year hero student, let alone a third year as she would normally be. Thus, she will be in 1A for any heroics courses, filling Mineta's empty seat.]]

** Several of the {{mooks}} at the USJ are strong enough to nearly defeat the students, as opposed to canon where they amounted to a RedShirtArmy.

* MasterOfNone: Becoming this is why Izuku doesn't get One For All. Izuku's own Quirk of telekinesis and telepathy has no common ground with One For All's super strength and toughness, which means, as Nedzu put it, Izuku would either have to forsake one Quirk to focus on the other or work on each and be mediocre at both.

* PowerIncontinence: It took Izuku getting purposefully injured by All Might to learn how to activate his HealingFactor at will. In addition, due to it being CastFromStamina he also had to learn how to ''not'' let it activate when he didn't want it to.