History Fanfic / CardiacArrest

* AmbiguouslyRelated: [[spoiler: The secondary plot of the story is the mysterious and potentially familial relationship between All for One and Izuku. For some reason, the supervillain went out of his way to not only save Izuku from death, but desperately try to heal his wounds while bonding with the teen. A lot of characters who somewhat know them both, note how similar they are (see below). The only people to declare that they aren't father and son is Bakugou and All for One himself. Except Bakugou, like Izuku, haven't met Izuku's father for at least a decade, was never really a close friend to Izuku and is at the moment in the middle of a months' long HeroicBSOD. All for One's words are also suspect since it's known that he is very manipulative when either telling lies or half-truths. Though he is a little more honest with Izuku, the teen, since the duo's restoration, haven't once seen the villain's full face. With the revelations of One for All, there are heavy hints that both the creation of the quirk along with the disastrous fallout of his fight with All Might, lead to the villain having psychological problems, which may include memory. Thanks also to UnreliableNarrator plus no All for One POV, it's unknown what exactly the villain is thinking, beyond his Izuku obsession.]]

** [[spoiler: Izuku returns home, but almost all of his relationships with friends and family have been strained (except for All Might and Todoroki). The worst strain is, of course, with [[ParentalNeglect his mother]] and [[TheBully Bakugou]], though the latter is taking a tentative step to repair it.]]
** [[spoiler: His nearly year long disappearance gave a lot of characters CharacterDevelopment including Izuku himself and ''All for One'', as they both bonded somewhat during the captivity thanks to their similarities and Izuku forcing All for One to have a HeelRealization. This leads the villain into abandoning his plans, healing All Might, and ''returning'' to his life as Hisashi Midoriya, to Izuku's horror.]]

** Izuku's [[spoiler: first]] resurrection resulted [[InhumanHuman in him clawing out his eyes due to its sensitivity, being unable to move his limbs, a scarred and near emaciated body and a very slowly healing back wound.]]
** [[spoiler: His second, along with All for One also being restored the same way, resulted in both males losing some of their emotional baggage involving their respective traumas. All for One thanks All Might for taking care of Izuku despite [[ArchEnemy decades of animosity that he shown before he healed.]] Izuku coldly no longer thinks of Bakugou as his friend thanks to the years of prejudice and bullying brought to the forefront [[SelectiveObliviousness no longer hampered by his feelings.]]]]

* DiesWideOpen: Played with. This is a big reason as to why Bakugo believes that Izuku really died crushed by rubble: his eyes were wide open and All For One manually closed them before teleporting away.

** After learning about the events during Shinsou's captivity, Iida suspects that All for One had decided to replace Shigaraki with Izuku due to the supervillain's interest in Izuku's non- quirk abilities. Bakugou and Todoroki also believe that he's purposefully distracting the villain from his endeavors and to save everyone. These aren't completely true: it's noted that All for One never cared about Shigaraki from the start and had already knew of some of Izuku's abilities in part because he had been somewhat watching Izuku for years before UA and in part because [[spoiler: Izuku is most likely related to All for One. It is actually thanks to Izuku's non-quirk abilities that he and the villain were fully healed.]] Izuku ''is'' distracting All for One yet not in the way even Izuku thinks; the villain was desperately trying to save him at first, enjoyed their conversations about quirks along the way [[spoiler: and when they both were fully healed, is trying to help Izuku recover, struggling to get into Izuku's good graces.]]

* GoneHorriblyRight: [[spoiler: The doctor, concerned about All for One's irrationality of preserving the dying Izuku, tries to convince Izuku to kill himself for their betterment. But in the process reveals certain truths to him, including his grandson being turned into a Noumu and that All for One has been watching Izuku for years. [[TakingYouWithMe Izuku agrees, but not before deciding to kill the doctor by using One for All to weaken All for One and destroy his body beyond repair]]. Only the intervention of All for One "saves" them both.]]
* HeroicSacrifice: Izuku saves Bakugou's life by pushing him out of the way of an collapsing building, getting crushed in his stead.
* HeroicSuicide: [[spoiler: Just like in [[FanFic/ConversationsWithACryptid the author's other fic]] All for One concludes (but is in denial) that a decade's worth of bullying and ostracization had left Izuku with [[JadeColoredGlasses serious]] [[KnightInSourArmor trust]] [[TheAntiNihilist issues]], plus [[HeroicSelfDeprecation low self-esteem and self-worth]], resulting in being a NervousWreck with a subconscious suicidal streak. [[ChronicHeroSyndrome Izuku still wants to help people]], to the point of willingly sacrificing himself to save someone (in the case with Bakugou) or weaken an enemy (see GoneHorriblyRight above), caring little of his own life or how the aftermath of said sacrifice will affect his loved ones.]]
* IfIWantedYouDead: All For One tries to assure Izuku that if he wanted to harm him, Izuku wouldn't haven woken up at all. Izuku, of course, doesn't believe him.
* InsultToRocks: Bakugo, enraged at being put inside a hospital room and separated from his classmates right after his rescue and what happened to Izuku, initially refers to the detective that came to talk to him as a lizard person... before going back because that would be an insult to lizard people.
* LegallyDead: Inverted. There's no footage of Izuku's body being taken by All For One, only Bakugo's word for it. Because of this, the authorities have decided to declare Izuku "missing" so they don't have to deal with the repercussions of the death of an UA student. Bakugou and All Might are livid because this means no official effort will be directed to finding and recovering his body.

* LukeIAmYourFather: [[spoiler: The doctor realizes that Izuku may be related to All for One when he thinks about their similar behaviors and notices Izuku's face heavily resembles All for One's pre-All Might Fight face.]]

** Monoma (his usual antagonistic antics against class 1-A results in him nearly getting killed by an emotional Bakugo when he mockingly asks about Izuku's whereabouts and wondering if he ran away. Monoma had to talk to Iida to get context, have a JerkassRealization and becomes TheAtoner).
** [[spoiler: All for One (he accidentally kills Izuku, who is heavily implied to be his son, desperately digs out his corpse, demands his doctor do everything in their power to revive him and constantly stays by his side, desperately pleading to Izuku not to die and let him help.]]

** All For One abandoning his fight with All Might and leaving the members of the League of Villains behind to be arrested by the authorities... just to run away with the body of a teenager whose only remarkable feature is being an UA student? This fic diverges from canon before All For One reveals that he knows Izuku is the ninth owner of One For All, so even those in the know have no idea why All For One would do that... at first.

* PointOfDivergence: Because the Kamino Arc ends differently then canon (namely that Izuku "dies" thanks to a stray attack from All for One), events take an interesting turn:

** Bakugou's CharacterDevelopment starts from and goes to a different direction then in canon. His canon breakdown starts in a future arc and it only forces him to acknowledge his [[InferioritySuperiorityComplex fl]][[HairTriggerTemper aws]] and Izuku's strength. Here, watching Izuku die protecting him and learning about One for All, he not only acknowledges those two points more heavily, but he also acknowledges how much of a foolish bully he was to Izuku. This results in him doing everything he can to find a way to save Izuku from All for One but it has left him emotionally unstable and potentially torpedoing his Hero career.

** Sir Nighteye and Mirio appear earlier then canon but their resulting circumstances change.
*** Nighteye tries to confront All Might for his disappearance, caring more about the "Symbol of Peace" moniker then All Might's potential grief. [[HumiliationConga It results in him being kicked out of Gran Torino's apartment after he insults Bakugou and Midoriya's memory, losing Mirio as an intern thanks in part to that, being punched in the face on live TV by Bakugou after Nighteye tries to attack the disguised Number One Hero and again insults Midoriya's memory, and lastly is painted as an All Might stalker by Bakugou and All Might to the police.]]
*** Mirio is taken out of Sir Nighteye's agency after UA learns that he was purposefully putting the third year in danger to train him into being All Might's successor for One for All. Mirio doesn't take it well.

** [[spoiler: [[AdaptationalVillainy 1-B's homeroom teacher, Vlad King, is revealed to be the traitor.]]]]
** The Shie Hassaikai raid begins and ends differently then canon.[[spoiler: Thanks to the WhyDidntIThinkOfThat moment below, All for One completely wipes out the yakuzu group, kidnaps Overhaul, and accidentally saves Eri (without awareness of her powers). What happens to Overhaul after he is used to heal both All for One and Izuku is unknown.]]

* ScrewThisImOuttaHere: The doctor starts to grow increasingly disillusioned with All for One thanks to the villain's obsession with Izuku. [[spoiler: After nearly dying by Izuku's hands and being punished for defiance by being All for One's guinea pig for Overhaul's quirk, the doctor concludes that the villain's attempts of helping the teen will backfire. In chapter 21, he decides he will abandon All for One and continue his research, thinking that thanks to his long life he will be able live on undetected. [[DramaticIrony He doesn't know that the heroes are on to him.]]]]
* StatingTheSimpleSolution: All for One tends to be caught off guard by Izuku's constant chastisement of the villain's inefficiency of his plans and usage of quirks. An example is Izuku suggesting that the villain could have easily killed All Might though poisoning him. Another is the WhyDidntIThinkOfThat moment below.

** In chapter 22, [[spoiler: Izuku reveals the truth about One for All to All for One, including the fact that the quirk contains a shard of his consciousness and may have affected both the villain and his brother. All for One doesn't take it well.]]
*** Also, [[spoiler: All for One reveals that he had been watching Izuku for most of his life and taking care of him since the revival due to wanting the teen to be a ReplacementGoldfish for his dead son, whose life closely parallels Izuku's. [[AmbiguouslyRelated A little too closely.]]]]

** [[spoiler: All for One then kidnaps Shinsou, taking his quirk and leaving the teen alive, invades and destroys Overhaul's yakuza clan while kidnapping Overhaul himself through the brainwashing quirk, [[VillainousRescue accidentally rescues Eri]], uses the doctor as a guinea pig to test Overhaul's quirk before using it on himself then Izuku.]]
* AWolfInSheepsClothing: Inverted. Since All Might's thin form was never revealed during the fight, he infiltrates the police force as Yagi Toshinori, an incredibly ruthless interrogator. This is all because he wants to personally interrogate the members of the League of Villains, but he knows that Shigaraki hates All Might with a passion and will either not cooperate, toy with him, or deliberately give misinformation if he shows up to the interrogation as All Might.

* ForWantOfANail: Because the Kamino Arc ends differently then canon (namely that Izuku "dies" thanks to a stray attack from All for One), events take an interesting turn:
** Because All for One leaves before finishing his fight with All Might, the League of Villains are captured, All Might doesn't reveal his true form to the masses nor loses his One for All embers and Shigaraki is not revealed to be Tenko Shimura to All Might, [[spoiler: All for One instead reveals the latter to Bakugou in chapter 23.]]
** All for One kidnaps Izuku Midoriya's body, meaning that One for All is now in his nefarious clutches once he has a means of reviving him, right? [[spoiler: Not really. All for One had no interest in the inheritable quirk but the teen himself. Izuku spends at least half a year in the supervillain's genuine and "doting" care after the revival. Although no one knows the reason why he's doing this, there's heavy indication that it has something to do with Izuku being related to him.]]
** Bakugou's CharacterDevelopment starts from and goes to a different direction then in canon. His canon breakdown starts in a future arc and it only forces him to acknowledge his [[InferioritySuperiorityComplex fl]][[HairTriggerTemper aws]] and Izuku's strength. Here, watching Izuku die protecting him and learning about One for All, he not only acknowledges those two points more heavily, but he also acknowledges how much of a foolish bully he was to Izuku. This results in him doing everything he can to find a way to save Izuku from All for One but it has left him emotionally unstable and potentially torpedoing his Hero career.
** See WolfInSheepsClothing for what is happening to All Might.
** Sir Nighteye and Mirio appear earlier then canon but their resulting circumstances change.
*** Nighteye tries to confront All Might for his disappearance, caring more about the "Symbol of Peace" moniker then All Might's potential grief. [[HumiliationConga It results in him being kicked out of Gran Torino's apartment after he insults Bakugou and Midoriya's memory, losing Mirio as an intern thanks in part to that, being punched in the face on live TV by Bakugou after Nighteye tries to attack the disguised Number One Hero and again insults Midoriya's memory, and lastly is painted as an All Might stalker by Bakugou and All Might to the police.]]
*** Mirio is taken out of Sir Nighteye's agency after UA learns that he was purposefully putting the third year in danger to train him into being All Might's successor for One for All. Mirio doesn't take it well.
** Both 1-A and 1-B have somewhat bonded along with the General Studies student Shinsou due to this event with Monoma and Shinsou becoming recurring characters.
** [[spoiler: [[AdaptationalVillainy 1-B's homeroom teacher, Vlad King, is revealed to be the traitor.]]]]
** The Shie Hassaikai raid begins and ends differently then canon.[[spoiler: Thanks to the WhyDidntIThinkOfThat moment below, All for One completely wipes out the yakuzu group, kidnaps Overhaul, and accidentally saves Eri (without awareness of her powers). What happens to Overhaul after he is used to heal both All for One and Izuku is unknown.]]
** The Jaku General Hospital raid (that sparks the Paranormal Liberation War Arc) is also different. [[spoiler: All for One abandons Garaki (and by extension his research) to his fate. Yagi, Endeavor, and a police team find the dying doctor under a suspended animation quirk and dozens of noumu vats further in the basement without a fight.]]

* LukeIAmYourFather: [[spoiler: The doctor realizes that Izuku must be related to All for One when he thinks about their similar behaviors and notices Izuku's face heavily resembles All for One's pre-All Might Fight face.]]

* SurprisinglyRealisticOutcome:
** In canon it was noted that while Izuku and his group did save Bakugou, they were still reprimanded, and Eraserhead all but said he should've expelled them all - not only did they break the law, they also put themselves in danger. Here, this concern is justified, as Izuku was seemingly killed by falling debris caused by the nearby fight.
** After one student died in Kamino, UA is put under review by the Ministry of Education to find what exactly happened that caused a student to die in a villain attack.
** While the staff is deciding whether or not to expel the group that went with Izuku, Eraserhead decides against it, noting that it won't actually fix anything - one student is already dead and the rest are either traumatized or barely coping with the guilt of said death, and the fact that not a single student said anything to the staff about the group going to Kamino implied a very large lack of trust that needed to be fixed.

** In canon it has been noted while Izuku and his group did save Bakugou, they are reprimanded and Eraserhead all but said he would have expelled them all because not only did they break the law, they also put themselves in danger and someone could have been injured or killed by going to Kamino, here Izuku seemingly died by failing debris from All For One's battle with All Might.
** After one of the student died in Kamino, the UA is put under review by the Ministry of Education to find what exactly happen that caused a student to die in a villain attack.
** While the staff decides whether to expelled the group that went with Izuku, Eraserhead decide against it, noting that it won't actually fix anything, one student already died and the rest is either traumatize or barely coping with the guilt because of said death, and the fact not a single student said anything to the staff about the group going to Kamino implies a very large lack of trust that need to be investigated.

* RealityEnsues:
** In canon it has been noted while Izuku and his group did save Bakugou, they are reprimanded and Eraserhead all but said he would have expelled them all because not only did they break the law, they also put themselves in danger and someone could have been injured or killed by going to Kamino, here Izuku seemingly died by failing debris from All For One's battle with All Might.
** After one of the student died in Kamino, the UA is put under review by the Ministry of Education to find what exactly happen that caused a student to die in a villain attack.
** While the staff decides whether to expelled the group that went with Izuku, Eraserhead decide against it, noting that it won't actually fix anything, one student already died and the rest is either traumatize or barely coping with the guilt because of said death, and the fact not a single student said anything to the staff about the group going to Kamino implies a very large lack of trust that need to be investigated.

* AmbiguouslyRelated: [[spoiler: The secondary plot of the story is the mysterious and potentially familial relationship between All for One and Izuku. For some reason, the supervillain went out of his way to not only save Izuku from death, but desperately try to heal his wounds while bonding with the teen. A lot of characters who somewhat know them both, note how NotSoDifferent they are (see below). The only people to declare that they aren't father and son is Bakugou and All for One himself. Except Bakugou, like Izuku, haven't met Izuku's father for at least a decade, was never really a close friend to Izuku and is at the moment in the middle of a months' long HeroicBSOD. All for One's words are also suspect since it's known that he is very manipulative when either telling lies or half-truths. Though he is a little more honest with Izuku, the teen, since the duo's restoration, haven't once seen the villain's full face. With the revelations of One for All, there are heavy hints that both the creation of the quirk along with the disastrous fallout of his fight with All Might, lead to the villain having psychological problems, which may include memory. Thanks also to UnreliableNarrator plus no All for One POV, it's unknown what exactly the villain is thinking, beyond his Izuku obsession.]]

* LukeIAmYourFather: [[spoiler: The doctor realizes that Izuku must be related to All for One when he thinks about their NotSoDifferent behaviors and notices Izuku's face heavily resembles All for One's pre-All Might Fight face.]]

* NotSoDifferent: It is noted throughout the story from Bakugou, All Might, and the doctor, that All for One and Izuku Midoriya are scarily alike in their quirk analysis, disregard for others' opinions, their strategic thinking, charisma, and manipulative streak.

''Cardiac Arrest'' is a Manga/MyHeroAcademia fanfic by [[https://archiveofourown.org/users/AMournfulHowlInTheNight A Mournful Howl In The Night]], the same author of ''FanFic/ConversationsWithACryptid''.

** Because All for One leaves before finishing his fight with All Might, the League of Villains are captured, All Might doesn't reveal his true form to the masses or loses his One for All embers and Shigaraki is not revealed to be Tenko Shimura to All Might.