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** As a result of the events of ''A Very Quirky Christmas'', the following characters have upgrades to their superpowers:
*** [[spoiler:Midnight, who gets Aroma Manipulation to control her Somnambulist once it gets emitted by her body]].
*** [[spoiler:Present Mic, who now has Ventriloquism to project his Voice quirk from anywhere]].
*** [[spoiler:Snipe who now has X-Ray Vision in addition to Homing]].
*** [[spoiler:Cementoss who gets Cement Creation so he can get better use out of his base Cement quirk]].
*** [[spoiler:Vlad King gets two quirks, Boosted Blood Production and Bloodlet, both of which have great synergies with Blood Control]].
*** [[spoiler:Eraserhead, who gets Second Eyelid so he can always keep Erasure active]].


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* ChristmasSpecial: The sidestory ''A Very Quirky Christmas'' is centred around Izuku, All Might, and Kagome giving others presents. In this specific case, [[spoiler:additional Quirks for the U.A. faculty that complements their existing ones]].
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* BoringButPractical: After finding it difficult to juggle many different Quirks together, Izuku realises the reason All for One prefers simple Quirks is that it's simpler to juggle those in battle.


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* KarmaHoudini: At the end of the main story, the Purple Onis and Kagome Mirai escape all consequences for their crimes and assorted evil actions. It's more extreme in Mirai's case since none of the authorities ever find out she conspired with Nine.

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* DeathByIrony: After coming back, [[spoiler:Garaki is killed by one of his own Nomu creations]].



** Chapter 17 reveals that [[spoiler:Kagome's motivations for seizing All for One for herself is because she saw how obsessed Japan was with Quirks to the point of everyone defining everyone by their Quirks and how it hurts everyone else. She swore that she would not be manipulated by Quirks, that she would be the one to manipulate them, and All for One is the key to that dream]].

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** Chapter 17 reveals that [[spoiler:Kagome's Kagome's motivations for seizing All for One for herself is because she saw how obsessed Japan was with Quirks to the point of everyone defining everyone by their Quirks and how it hurts everyone else. She swore that she would not be manipulated by Quirks, that she would be the one to manipulate them, and All for One is the key to that dream]].dream.



* ShoutOut: During his confrontation with [[spoiler:the copy of All for One's vestige]], one of their dialogue paraphrases the famous Approach scene between [[Manga/JoJosBizarreAdventureStardustCrusaders DIO and Jotaro]].

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* ShoutOut: ShoutOut:
**
During his confrontation with [[spoiler:the copy of All for One's vestige]], one of their dialogue paraphrases the famous Approach scene between [[Manga/JoJosBizarreAdventureStardustCrusaders DIO and Jotaro]].Jotaro]].
** In an epic shoutout, Syndrome from ''Franchise/TheIncredibles'' is quoted in the ending, specifically [[spoiler: "And when everyone's a Hero, no one will be."]]
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* ForWantOfANail: After the dust settles and the world tries to recover, there is renewed interest in space as a result of the full events of the Rapture, which results in UA creating a new Astronomy Course.


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* OffTheRails: The Rapture complete derails the canon of ''Manga/MyHeroAcademia'', with most canon characters disappearing and the remainder having their personal relationships rewritten from near scratch as a direct result. This also leads to the original plot of canon being completely destroyed in favour of a different plot.
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* FateWorseThanDeath: [[spoiler:All for One is forced to use an alien escape pod to escape the attempts to kill him, and he ends up having to wait for over two thousand years to get to a planet he could use for his plans. Though he is immortal and can get there eventually and still be alive, All for One almost prefers getting his head bashed in instead]].

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* HoistByHisOwnPetard: [[spoiler:Izuku turns All for One's use of Genetic Manipulation against him by using it to combine his own copy of All for One with One for All]].

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* HoistByHisOwnPetard: HoistByHisOwnPetard:
**
[[spoiler:Izuku turns the vestige All for One's use of Genetic Manipulation against him by using it to combine his own copy of All for One with One for All]].All]].
** [[spoiler:The original All for One fused his Quirk Collection into a single Quirk to bypass the original limits of the Quirk All for One, but this works against him when he needs to deactivate some of his Quirks and finds that because they are now a single Quirk, they are all-or-nothing]].

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* BeCarefulWhatYouWishFor: [[spoiler:Kagome wished to have the All for One Quirk for herself. All for One the person grants her wish, at the cost of his copied vestige overpowering her will and possessing her body]].

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* BeCarefulWhatYouWishFor: [[spoiler:Kagome wished to have the All for One Quirk for herself. All for One the person grants her wish, at the cost of his copied vestige overpowering her will and possessing her body]]. [[spoiler:Because of Izuku's actions, the vestige gets destroyed, allowing Kagome to be free and with full control of her own body and All for One, ultimately subverting this trope]].


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* DyingDeclarationOfHate: [[spoiler:As the All for One vestige is destroyed, he spends his last moments cursing All Might, then Izuku, and finally Kagome]].

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* AintTooProudToBeg: [[spoiler:Upon realizing that All for One outmanoeuvred them and that it is about to die, the alien responsible for the Rapture desperately tries to offer a new and better deal to prevent its fate]].

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* AintTooProudToBeg: AintTooProudToBeg:
**
[[spoiler:Upon realizing that All for One outmanoeuvred them and that it is about to die, the alien responsible for the Rapture desperately tries to offer a new and better deal to prevent its fate]].fate]].
** [[spoiler:Upon realizing his impeding destruction, the All for One vestige possessing Kagome desperately tries to negotiate a deal with Nedzu only to be told there's nothing he can offer that's better than Nedzu hearing his screams of anguish]].



* ChekhovsGun: Chapter 13 has ''something'' attempting to attack the vestiges in One for All. [[spoiler:Chapter 31 reveals this is an alien tech that can destroy vestiges and it is used to destroy the All for One copy to free Kagome from him]].



* DePower: Downplayed for both individuals. [[spoiler:Izuku sacrifices nearly half of One for All's stockpiled strength in exchange for a gambit that allows him to defeat the All for One clone he's fighting without killing Kagome. Said gambit is to put Bestowal in All for One and then transfer that to All Might, permanently taking most of the clone's power]].



** Chapter 30 has [[spoiler:Izuku giving All Might his hair to give him All as One. Except, it wasn't his hair. It turns out that in the previous chapter, Izuku put a Quirk in the All for One he was fighting, then took a hair from the possessed body of Kagome, gave it to All Might, and through the transfer process, all of the quirks the All for One possessing has is given to All Might. All Might gladly turns the Quirks that All for One stole over the years against the thief]].

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** Chapter 30 has [[spoiler:Izuku giving All Might his hair to give him All as One. Except, it wasn't his hair. It turns out that in the previous chapter, Izuku put a Quirk Bestowal in the All for One he was fighting, then took a hair from the possessed body of Kagome, gave it to All Might, and through the transfer process, all of the quirks the All for One possessing Kagome has is given to All Might. All Might gladly turns the Quirks that All for One stole over the years against the thief]].

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* AdaptationalSuperpowerChange: [[spoiler:The aliens accidentally give Izuku Nine's copy of All for One]].

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* AdaptationalSuperpowerChange: AdaptationalSuperpowerChange:
**
[[spoiler:The aliens accidentally give Izuku Nine's copy of All for One]].One]].
** [[spoiler:Izuku gives All Might All as One instead of him turning Quirkless]].


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** Chapter 30 has [[spoiler:Izuku giving All Might his hair to give him All as One. Except, it wasn't his hair. It turns out that in the previous chapter, Izuku put a Quirk in the All for One he was fighting, then took a hair from the possessed body of Kagome, gave it to All Might, and through the transfer process, all of the quirks the All for One possessing has is given to All Might. All Might gladly turns the Quirks that All for One stole over the years against the thief]].
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* ShoutOut: During his confrontation with [[spoiler:the copy of All for One's vestige]], one of their dialogue paraphrases the famous Approach scene between [[Manga/JoJosBizarreAdventureStardustCrusaders DIO and Jotaro]].

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* DescriptionCut: Nedzu thinks the threat of All for One is gone due to the Rapture, which cues an immediate scene change to Nine, though wielding an imperfect version of All for One, proves Nedzu wrong with his existence. [[spoiler:The scene also reveals the original copy of All For One - with the owner's personality inside - is still stored somewhere in the Doctor's lab.]]

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* DescriptionCut: DescriptionCut:
**
Nedzu thinks the threat of All for One is gone due to the Rapture, which cues an immediate scene change to Nine, though wielding an imperfect version of All for One, proves Nedzu wrong with his existence. [[spoiler:The scene also reveals the original copy of All For One - with the owner's personality inside - is still stored somewhere in the Doctor's lab.]]
** Izuku thinks [[spoiler:Stars and Stripes is doing well against the original All for One. Cue a scene change showing she is struggling.
]]

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* BeCarefulWhatYouWishFor: [[spoiler:Kagome wished to have the All for One Quirk for herself. All for One the person grants her wish, at the cost of his copied vestige overwriting her personality]].

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* BeCarefulWhatYouWishFor: [[spoiler:Kagome wished to have the All for One Quirk for herself. All for One the person grants her wish, at the cost of his copied vestige overwriting overpowering her personality]].will and possessing her body]].



* ComboPlatterPowers: After [[spoiler:receiving Nine's copy of All for One, Izuku borrows Overclock and Cellular Activation and the latter helps deal with the drawbacks of the former]].

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* ComboPlatterPowers: ComboPlatterPowers:
**
After [[spoiler:receiving Nine's copy of All for One, Izuku borrows Overclock and Cellular Activation and the latter helps deal with the drawbacks of the former]].former]].
** [[spoiler:All as One is ''built'' on the concept of combining powers in one person. Each individual Quirk exists separately within the core, but when Izuku uses them, they manifest as a unified force with excellent synergies]].



* DeathOfPersonality: [[spoiler:Kagome's personality is overwritten by All for One's copied Vestige. All for One tells Izuku a bit of her is still there but is a complete non-factor]].

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* DeathOfPersonality: DemonicPossession: [[spoiler:Kagome's personality body is overwritten taken over by All for One's copied Vestige. All for One tells Izuku a bit of her she is still there but is a complete non-factor]].powerless to resist]].
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Because no one else can.

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Because there's no one else can.
in the world to be one for those who remain.
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** Chapter 28 has [[spoiler:Izuku realizing everyone misunderstood what One for All was actually stockpiling from the start and him using this knowledge plus hijacking Genetic Manipulation to fuse One for All and his copy of All for One into a new Quirk called All in One]].

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** Chapter 28 has [[spoiler:Izuku realizing everyone misunderstood what One for All was actually stockpiling from the start and him using this knowledge plus hijacking Genetic Manipulation to fuse One for All and his copy of All for One into a new Quirk called All in as One]].
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* ExactWords: [[spoiler:All for One's command for Genetic Manipulation is to fuse the Quirks One for All and All for One. Thing is, there were ''two'' copies of the Quirk All for One, so Izuku is able to hijack it to fuse One for All to his own copy of All for One to prevent the combined Quirks from killing him]].


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* HoistByHisOwnPetard: [[spoiler:Izuku turns All for One's use of Genetic Manipulation against him by using it to combine his own copy of All for One with One for All]].


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* PowerMisidentification: [[spoiler:Izuku makes a crucial realization about One for All, specifically the Stockpile aspect, and that realization is that it is not in fact stockpiling strength as everyone believed, but ''Quirk Fields''. By reevaluating his understanding of One for All from the ground up with this critical fact in mind, he is able to come up with a way to prevent himself from being killed from wielding too many Quirks at once]].


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** Chapter 28 has [[spoiler:Izuku realizing everyone misunderstood what One for All was actually stockpiling from the start and him using this knowledge plus hijacking Genetic Manipulation to fuse One for All and his copy of All for One into a new Quirk called All in One]].
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* DidNotThinkThisThrough: [[spoiler:Nedzu makes an oversight in his battle plan against All for One. He forgot people cannot handle too many Quirks without danger. One for All coming back to Izuku when he has a copy of All for One overloads him and endangers him right in the middle of his battle]].

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* DramaPreservingHandicap: Izuku is unlocking the other Quirks within One for All far faster than he did in canon, but he cannot control them properly, meaning he has to be careful with their usage. [[spoiler:Especially the Second's Quirk, which could kill him if used too much.]]

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* DramaPreservingHandicap: DramaPreservingHandicap:
**
Izuku is unlocking the other Quirks within One for All far faster than he did in canon, but he cannot control them properly, meaning he has to be careful with their usage. [[spoiler:Especially the Second's Quirk, which could kill him if used too much.]]]]
** [[spoiler:As incredible as the Quirk All for One maybe, it does have limits. The user can only use so many Quirks at once, with All for One the person comparing it to a librarian trying to hold on to several books at the same time. Some "books" are also bigger than others, so certain useful Quirks take up his practical capacity to use different Quirks more than a less useful Quirk. Genetic Manipulation turns out to be a game changer since it allows him to combine different Quirks into a single Quirk without reducing their combined potency.]].
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* MythologyGag: [[spoiler:All for One references his original plan of hijacking Tomura's body as part of his ideal scenario for confronting Stars and Stripes]].
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** [[spoiler:Knuckleduster spent years as a Quirkless vigilante even before the fic started]], and Izuku specifically names him as an inspiration for his own old dreams of becoming a Quirkless Hero.

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** [[spoiler:Knuckleduster Knuckleduster spent years as a Quirkless vigilante even before the fic started]], started, and Izuku specifically names him as an inspiration for his own old dreams of becoming a Quirkless Hero.



* DeathOfThePersonality: [[spoiler:Kagome's personality is overwritten by All for One's copied Vestige. All for One tells Izuku a bit of her is still there but is a complete non-factor]].

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* DeathOfThePersonality: DeathOfPersonality: [[spoiler:Kagome's personality is overwritten by All for One's copied Vestige. All for One tells Izuku a bit of her is still there but is a complete non-factor]].
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* GodzillaThreshold: [[spoiler:To deal with the threat of the combined might of the Aliens and All for One, the acting President of the United States was prepared to use the nuclear option which would kill billions to save the remaining billions. Only the sight of Stars and Stripes and being told All Might would arrive kept him from following through]].

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* ComboPlatterPowers: After [[spoiler:receiving Nine's copy of All for One, Izuku borrows Overclock and Cellular Activation and the latter helps deal with the drawbacks of the former]].



* DeathOfThePersonality: [[spoiler:Kagome's personality is overwritten by All for One's copied Vestige]].

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* DeathOfThePersonality: [[spoiler:Kagome's personality is overwritten by All for One's copied Vestige]].Vestige. All for One tells Izuku a bit of her is still there but is a complete non-factor]].
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* CouldSayItBut: Wedge can neither confirm nor deny to the rest of Izuku's group that he has been to a certain military base, and he most definitely has not been invited to the secret basement.
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* BeCarefulWhatYouWishFor: [[spoiler:Kagome wished to have the All for One Quirk for herself. All for One the person grants her wish, at the cost of his copied vestige overwriting her personality]].


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* DeathOfThePersonality: [[spoiler:Kagome's personality is overwritten by All for One's copied Vestige]].
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* AintTooProudToBeg: [[spoiler:Upon realizing that All for One outmanoeuvred them and that it is about to die, the alien responsible for the Rapture desperately tries to offer a new and better deal to prevent its fate]].
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* AdaptationalSuperpowerChange: [[spoiler:The aliens accidentally give Izuku Nine's copy of All for One]].


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* DidNotSeeThatComing:
** [[spoiler:The alien is shocked to see All for One successfully betray him, having believed they made sure to stack the deck so he couldn't get one up on the alien]].
** [[spoiler:All for One in turn is shocked to see that the alien ''accidentally'' give Izuku Nine's copy of All for One, something he could in no way plan for]].


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** Chapter 24 has [[spoiler:All for One successfully killing the alien responsible for the Rapture and Izuku showcasing Nine's copy of All for One]].
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* AbledInTheAdaptation: [[spoiler:The aliens heal All for One of his injuries]].


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* EvilerThanThou: [[spoiler:All for One makes clear to the alien that caused the Rapture that ''he'' is the greater villain when he betrays them and kills them by assimilating the alien into his Quirk]].
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* ManipulativeBastard: [[spoiler:Shigaraki manipulates Samuel by preying on his desire for recognition for his accomplishments and desire to avoid consequences for his illegal actions, which manages to get him access to the UFO hidden on I-Island]].
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* KillSat: The United States have a top secret satellite that can launch nuclear missiles from orbit. [[spoiler:They used this to attack and capture one of the alien ships in the past]].
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* VillainEpisode: [[spoiler:The Flashback arc is entirely focused on All For One and the alien AI responsible for the Rapture]].

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* ThrowingOffTheDisability: [[spoiler:The aliens]] help All for One restore all his injuries.



* WhamEpisode: Chapter 17 is a real doozy. [[spoiler:It is first revealed that it was a branch of the US Government that experimented on Nedzu. It is then quickly revealed that contrary to what Nedzu thought, he wasn't created by them, he was merely found by them. The circumstances of his initial escape also lines up with the Rapture where every human with a Quirk disappeared without a trace. Thus meaning the same people truly responsible for his creation are ''also'' the same people responsible for the Rapture. Thus, by tracing Nedzu's true origins, General Adams is able to figure out the perpetrators and already attempted a rescue of those taken. Which ended in complete failure. 25 tanks, 15 jets, and a lot of drones, were all taken out by a single enemy aircraft. The enemy is simply technologically superior]].

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* WhamEpisode: WhamEpisode:
**
Chapter 17 is a real doozy. [[spoiler:It is first revealed that it was a branch of the US Government that experimented on Nedzu. It is then quickly revealed that contrary to what Nedzu thought, he wasn't created by them, he was merely found by them. The circumstances of his initial escape also lines up with the Rapture where every human with a Quirk disappeared without a trace. Thus meaning the same people truly responsible for his creation are ''also'' the same people responsible for the Rapture. Thus, by tracing Nedzu's true origins, General Adams is able to figure out the perpetrators and already attempted a rescue of those taken. Which ended in complete failure. 25 tanks, 15 jets, and a lot of drones, were all taken out by a single enemy aircraft. The enemy is simply technologically superior]].superior]].
** Chapter 20 and 21 [[spoiler:reveals the existence of aliens and the confirmation that they're the ones responsible for the Rapture]].
* WhamShot: Chapter 20 shows [[spoiler:an alien spaceship]].

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