* ''Franchise/LyricalNanoha''
** The very first [[AllThereInTheManual Sound Stage]] of ''MagicalGirlLyricalNanoha'' had Nanoha trying and failing to do a bind spell. She had to do one properly to [[GottaCatchThemAll catch a Jewel Seed monster]] by the end of the day. She would later perform this spell in the anime itself during a decisive moment in her final battle against Fate.
** The second season introduces the concept of [[VoluntaryShapeshifting Transformation Magic]] through a distraught Shamal when, [[LivingWithTheVillain after finding out how close their master was to the heroes]], she makes an offhand comment of how she should have applied it to the Wolkenwritter. When TheReveal came, it turned out that certain other parties ''didn't'' forget to apply this useful spell.
** And then there's Area Search, a utility spell Nanoha created way back in the third episode of the first season to solve a specific problem and has never had the chance to use again...until the last episodes of the third season, which gave the hidden Quattro a very nasty surprise.
** ''Manga/MagicalGirlLyricalNanohaVivid'' has Einhart being taught the principles of "Water Cutting" by Nove. During the mock battle against Nanoha, she manages to figure out how to apply it in battle and punches [[WaveMotionGun Excellion Buster]] [[AttackReflector back to Nanoha]].
* ''Manga/{{Naruto}}'' has the titular character walking into a person practicing a ninjutsu technique ([[{{Fanservice}} naked]]); we can tell it's Hinata, but he can't, [[IdiotHero because]] [[DumbIsGood he's]] [[SelectiveObliviousness Naruto]]. She uses this at the end to kill a bunch insects the enemies were attacking with.
** She is shown earlier training with the technique; she activates her Byakugan, some kunai fly at her, and within moments all of them are on the ground, broken.
** Naruto himself debuts the series unable to use his (second) most famous technique (the most famous being the Sexy no Jutsu)
** There is the most famous Sennen Goroshi (Thousand Years of Death) which was introduced for comedic effect, but Naruto uses it ''differently'' during his battle against Gaara. Apparently he thinks that is obviously ''the'' technique to use in that situation, and belives that Kakashi ''taught'' him that technique.
** Naruto's Rasengan ability counts. At first it seemed like just another technique in Naruto's arsenal that he would use to defeat the current arc's villain. Thing is, it becomes his signature technique near the end of the next arc when he enters a famous clash with its counterpart, Sasuke's Chidori.
** Sasuke's shadow shuriken technique gets used again during his fight with Itachi, although he modified his shuriken to avoid a repeat of having his enemy dodge it harmlessly.
* In ''Anime/DragonBallZ'', King Kai teaches Goku the [[CombinedEnergyAttack Spirit Bomb]], and outlines exactly what kind of power this attack has. Not only that, but he says only to use it as a last resort. So Goku has to use it in his following battle as well as nearly every movie and future BigBad.
** It's okay though. It may have all the power of life, the stars, and the universe, but it never works anyway.
*** [[spoiler: Except on Kid Buu. At the end of the series.]]
* In the first chapter of ''Manga/OnePiece'', Shanks scares a sea monster away by staring it down. Over ''400 chapters'' later this is revealed to be an actual [[FightingSpirit superpower]] that any pirate captain worth their salt has.
** Actually it's a very rare superpower (it was mentioned to be an innate ability that only one in a million people have) and only a few elite pirate captains have it. Luffy, being the protagonist, is able to use it.
*** This is only half-true. This power is called Haki, and comes in three forms (Their names change depending on the translation, but the following names all come from the Viz translation, for clarity's sake). There's the Color of Arms Haki which allows their users to bypass Devil Fruit users' NighInvulnerability, the Color of Observation Haki which allows one to sense others' presence and anticipate their attacks, and the aforementioned power to knock people out, the Color of the Supreme King. The first two types are common to everyone and caan be awakened with proper training, but only a select few possess the third type, Luffy being one of them.
* In ''Manga/AttackOnTitan'', Eren Yeager is noted to be a fairly average soldier beyond his high scores in hand-to-hand combat. Since their opponents are man-eating giants, unarmed combat is considered to be a waste of time for a soldier to learn and not considered in their final scores. [[DarkActionGirl Cynical]] Annie mentors Eren in numerous unarmed techniques, which comes in handy later on when [[spoiler: he discovers his ability to transform into a Titan]]. Then it becomes even ''more'' vital, when he uses several of the techniques Annie taught him to disable [[spoiler: the Armored Titan]], a much larger and tougher opponent.
* The fights in ''KenichiTheMightiestDisciple'' often feature Kenichi, at a critical moment, using a technique taught to him in the last training session shown.
** And occasionally bringing back old techniques from earlier in the series, such as the yamazuki double punch. Other characters make particular note of whenever he uses the "kouhou - haihou" stepping method, as it was the first technique he was ever taught. This isn't SoLastSeason either: the techniques usually remain just as useful as they were the first time.
* Negi's [[ShockAndAwe Axe of Lightning/Axe of Zeus]] spell in ''MahouSenseiNegima''. Taught by Evangeline at the start of Vol. 8, he was naturally forced to do it perfectly by the end of the volume to defeat the BigBad for that StoryArc.
** A more far-reaching example; in volume 3, Negi uses a bunch of magical decoy spirits during his fight with Evangeline. 200 chapters later he pulls out a ''much'' larger scale version of the same technique to fight [[spoiler: Kurt Godel]].
*** And likewise used with the [[NoKillLikeOverKill Thousand Bolts spell]]
** During the fight between Negi and Rakan, Jack mentions that now several people in the world know how to effectively battle Negi's Thunder God technique. Guess which elemental [[spoiler: Averruncus]] Fate ends up fighting?
* Occurs in ''[[RanmaOneHalf Ranma 1/2]]'' during the moxibustion storyline. Cologne teaches Ranma [[TimeToUnlockMoreTruePotential a new technique]] so he can fight back against Happosai without strength, a technique which requires Ranma to stay calm and not emotionally react to his opponent. Genma, his father, immediately tries to get a rise out of him with "Humiliating Photo Fu," whipping out embarrassing naked baby pictures. The whole sequence seems like an extended riff on Genma's usual JerkAss tendencies...but Ranma ''actually puts Humiliating Photo Fu to use'' during the climactic battle against Happosai, by flashing photos of himself [[GenderBender as a girl]] in lingerie.
** Also, moves that characters learned throughout the series are often used later.
* In ''Anime/CowboyBebop'' Spike had a guy requesting to teach him martial arts, where Spike demonstrates a knife disarm and the philosophy of being calm as water. The guy was having a hard time understanding it all, but in the climactic fight he manages to pull off the same move against a mook. [[spoiler: And immediately subverted when he is shot and killed in the midst of his celebration.]]
* In ''Anime/{{Monster}}'', Nina is shown innocently practicing Aikido. Later, when Tenma is attacked, it comes in handy.
* ''Manga/{{Bleach}}'': Ichigo took karate lessons from an early age, initially because he wanted to be the kind of son who could protect his mother. When he finally became a shinigami, he was therefore already a very competent fighter who didn't need to learn how to fight from scratch.
* Subverted in ''SuzumiyaHaruhi''. After [[CrowningMusicofAwesome completely rocking out at the Cultural Festival]], Haruhi comments that she never knew that [[BadassBookworm Yuki]] was such a good guitar player. Kyon reminds us that [[SuperpowerLottery she probably picked up the skill the moment Haruhi suggested it because of her freakishly awesome powers.]]
* In ''SummerWars'', a lot of the Jinnouchi family members have skills or positions that end up becoming relevant to the fight against Love Machine. The most important, though, are Kenji's math abilities and [[spoiler:Natsuki's Koi-Koi skills]].
* In ''PokemonSpecial'', Lady Berlitz tries her hand out in many new things, so it's inevitable that some of them would come in handy. One good case is that by becoming a whiz at the slot machines, her eyes become very skilled at keeping up with fast objects. She manages to defeat Maylene's Riolu despite it jumping around behind a wall of falling rocks, and later has an easy time at the Battle Arcade by always landing on favorable results.
* One episode of the ''Anime/{{Pokemon}}'' anime had Team Rocket against a poacher who stored his captures in electrified cages. Due to [[ATwinkleInTheSky their run-ins with Ash and Pikachu]] [[OnceAnEpisode every episode for five years at that point]], Meowth was able to completely ignore the shock from the cage as he unlocked it.
** In the episode "Noodles, Roamin' Off!", Team Rocket breaks up and each pursues their own goals before reuniting in the end. Oddly, everything they do comes back to help Jessie earn her third ribbon in the later episode "Dressed For Jess Success". Jessie decides to develop her Jessilina role and distances it more from her own career in Team Rocket...thus turning it into a role that anyone can play, including James. Meowth's natural talent for making ramen noodles wins him the appeal round. And James's fearless battle style against a far greater foe, though only infuriating his opponent before, pays off when his Carnivine throws Dawn's Mamoswine completely off its game and causes it to go berserk, costing it points with the judges and winning him the third ribbon.
* In ''{{Kemonozume}}'', Bon sadly mentions that his [[spoiler:Flesh Eater arms]] prevent him from achieving his dream of being a [[spoiler:shot putter]]. Near the end, [[spoiler:when Toshihiko and Yuka need Ooba's eyes to stop the giant rolling ball, Bon picks up Ooba's head and shot puts it back to them]].
** Yuka also uses the paralysis technique Toshihiko taught her on [[spoiler:Toshihiko, to stop him from following her]] in the last episode, [[spoiler:but it doesn't last long enough to work]].
* The first episode of ''{{Diebuster}}'' shows Nono accidentally splitting a plate in half with absolutely no effort. She mentions, almost as a throwaway joke, that she's good at splitting things. Fast forward to the second half of the series. [[spoiler:Nono uses that same power to completely bisect Saturn's moon Titan and then later a freaking black hole, which even the characters admit should be impossible.]]
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