History Fanfic / QuirkSequencer

* LaserGuidedKarma: Izuku who was kept the true nature of his Quirk secret for five years is forced to ponder on the fact that a villain almost killed All Might without knowing any of the details as it's All Might's secret to keep. Unfortunately this makes Izuku's already paranoiac tendencies even worse.

* ComboPlatterPowers: This is essentially Izuku's Quirk incarnate. By ingesting the DNA of an individual, he can copy their sequence or Quirk. However, he won't be able to use it until he combines it with another sequence. Already he has 9 different Quirk combinations:

** Pneumatic Cannon's is Newtons Third Law[[note]] For every action there is an equal and opposite reaction [[/note]]. When charging up a massive amount of condensed air and firing it off, the amount of recoil can easily break Izuku's arm.

* AdaptationalBadass: Izuku, thanks to Sequencer. Though it isn't really made apparent until he's attacked by the Sludge Villain. In canon, he needed to be saved by All Might but in this story, he's actually capable of holding it off. Also shows up in their rematch, in which Canon!Midoriya was practically useless but Sequencer!Midoriya was actually capable of harming it and intentionally causing it to let go of Bakugou.

* OpportunisticBastard: This is essentially Izuku's approach to collecting sequences. If there is a possibility that he can get a sequence, he will do what he can to take it, be it hovering around kids so that he can take their sequence when they inevitably hurt themselves or rushing to the aid of an old man who burned himself. In fact X-Claws was made to make seizing opportunities easier. Before even getting to the Entrance Exam, Midoriya had acquired over ''150 sequences'' and at this point in time he had only made seven combinations. Midoriya does genuinely want to help people but he also outright says that if the circumstances were different during the Entrance Exam he'd let his collection desire run wild and try to get as many Quirk sequences as he could.

* AngerBornOfWorry: It's implied that Bakugou's anger at Midoriya's involvement in the Sludge Villain incident was because he put himself in danger rather than because Midoriya decided to help him like in canon.
* AntiHero: Midoriya genuinely wants to become a hero but his paranoia regarding his secret Quirk cause him to go about achieving that goal in less than pure methods. He created a Quirk specifically to cut people if there is no other option, trespassed onto private property, melted a warehouse's lock, constantly lied to his mother and deliberately injured his doctor to get her Quirk.

[[https://archiveofourown.org/works/15957641/chapters/37216904 Quirk: Sequencer]] is a ''Manga/MyHeroAcademia'' fanfic by [[https://archiveofourown.org/users/LordCrusade/pseuds/LordCrusade LordCrusade]]. This story is yet another "What if Izuku had a Quirk" fanfiction but with a twist. On it's own, Sequencer is a fairly useless Quirk. In fact Izuku was deemed Quirkless because he didn't even know it existed for most of his childhood. However, after an 'accident' Izuku not only discovered his Quirk but discovered it's potential to become one of the most powerful Quirks in existence.

---> '''Midoriya:''' The Quirk is not ideal in the slightest, not only does it [[PowerAtAPrice lose the cutting power of the claws, but it also loses the versatility that Kacchan’s Quirk offers him]]. Instead of being able to secrete and detonate explosions whenever you want, this Quirk would force its user to have to make contact with things first. Plus you could [[PowerIncontinence hurt yourself using it]]!

* FairWeatherFriend: Midoriya's classmates at his middle school. They had no problem leaving him alone or even participate in the bullying but as soon as he gets a cool Quirk, they all want to be his friend. It goes two ways though as Midoriya only accepts their friendship to gain their DNA.

** One reason Midoriya rejects Explosive Claws in chapter 4 is that it forced the user to make contact with an object first instead of being able to secrete sweat that allowed him to detonate an explosion whenever he wanted. The Quirk he actually makes with Explosion does exactly that.

** Midoriya hates keeping Sequencer a secret because it forces him to do things more underhanded than if he just told the truth. For example, he has to on occasion deliberately injure people to get their Sequence and trespassed onto an AbandonedWarehouse because he needed somewhere to train in secret.

* SpottingTheThread: This is how [[spoiler: Nezu finds out Midoriya's secret. He realizes very subtle details that point towards Midoriya having multiple Quirks. If PlasmaCannon can create thrust, why didn't Midoriya use it to get around the area more? Why did his final plasma ball move faster than the previous ones despite being larger than all of them? Why did he have to throw it when previously he just fired plasma blasts from his hands? The smoke is swirling around Midoria's legs as if it was being manipulated and then blown away. His plasma blasts are fired off after Midoriya starts flying. He throws black balls around while firing off plasma blasts as if they were actually explosive rather than the plasma blasts. Oh, and there's an actual frame of video where Midoriya is summoning one of his familiars. In Izuku's defense Nezu had to triple-review footage to uncover this]].

* WhamShot: [[spoiler: All Might's Quirk is shown on the third spire meaning it was already pre-made and revealing that All Might is hiding something huge]].

[[https://archiveofourown.org/works/15957641/chapters/37216904 Quirk: Sequencer]] is a ''Manga/MyHeroAcademia'' fanfic by LordCrusade. This story is yet another "What if Izuku had a Quirk" fanfiction but with a twist. On it's own, Sequencer is a fairly useless Quirk. In fact Izuku was deemed Quirkless because he didn't even know it existed for most of his childhood. However, after an 'accident' Izuku not only discovered his Quirk but discovered it's potential to become one of the most powerful Quirks in existence.

** [[CharlesAtlasSuperpower Sun's Out, Gun's Out]] [[labelnote: Combined Quirks]] [[SuperStrength Gains]] and [[EnergyAbsorption Synthesis]]. Gains accelerates the user's muscle growth while Synthesis allows the user to convert sunlight into energy for their body]]. Izuku is able to absorb sunlight and turn it into energy to speed up muscle growth and restore stamina. However, the Quirk is only active if he's exercising and if he is in sunlight while doing so.

** [[SummonMagic Dark Familiar]] [[labelnote: Combined Quirks]] [[ThePowerOfCreation InkTools]] and Were-Parts. Ink Tools allowed the user to create [[ExactlyWhatItSaysOnTheTin tools out of ink]]. The details of Were-Parts are unknown but it likely has something to do with animal parts [[/labelnote]]. While not actually magic, Izuku can summon creatures such as wolves or eagles that are made from the tattoo on his back. This is currently the only mutation Quirk Izuku has mainly because [[spoiler: mutation Quirks tend to be permanent]].

** [[EnergyAbsorption Sun's Out, Gun's Out]]. Izuku is able to absorb sunlight and turn it into energy to speed up muscle growth and restore stamina by exercising.

* InSpiteOfANail: Despite [[spoiler: Midoriya refusing All Might's offer, he still ends up with One For All thanks to Sequencer]].

* OpportunisticBastard: Downplayed with Midoriya but this is essentially his approach to collecting sequences. If there is a possibility that he can get a sequence, he will do what he can to take it, be it hovering around kids so that he can take their sequence when they inevitably hurt themselves or rushing to the aid of an old man who burned himself. In fact X-Claws was made to make seizing opportunities easier. Before even getting to the Entrance Exam, Midoriya had acquired over ''150 sequences'' and at this point in time he had only made seven combinations. It's downplayed because Midoriya does genuinely want to help people.

* SpottingTheThread: This is how [[spoiler: Nezu finds out Midoriya's secret. He realizes very subtle details that point towards Midoriya having multiple Quirks. If PlasmaCannon can create thrust, why didn't Midoriya use it to get around the area more? Why did his final plasma ball move faster than the previous ones despite being larger than all of them? Why did he have to throw it when previously he just fired plasma blasts from his hands? The smoke is swirling around Midoria's legs as if it was being manipulated and then blown away. His plasma blasts are fired off after Midoriya starts flying. He throws black balls around while firing off plasma blasts as if they were actually explosive rather than the plasma blasts. Oh, and there's an actual frame of video where Midoriya is summoning one of his familiars]].

* MassOhChrap: The prospect of Midoriya and Bakugou fighting each other with Quirks is enough to cause the entire class (teacher included) to have this reaction.

* OpportunisticBastard: Downplayed with Midoriya but this is essentially his approach to collecting sequences. If there is a possibility that he can get a sequence, he will do what he can to take it, be it hovering around kids so that he can take their sequence when they inevitably hurt themselves or rushing to the aid of an old man who burned himself. In fact X-Claws was made to make seizing opportunities easier. It's downplayed because Midoriya does genuinely want to help people.

** [[HealingHands Freya's Garden]] [[labelnote: Combined Quirks]] [[GreenThumb Mossy]] [[HealingHands Repair and Soothing Hands]] Mossy Repair allows the user to spread moss on a person to speed up their healing process while Soothing Hands speeds up the rate of recovery for damaged muscles]] [[/labelnote]]. This allows Izuku to grow moss onto people to speed up their healing. He can also use it on himself to give himself a bit of a HealingFactor.

** [[HavingABlast Land Mine]] [[labelnote: Combined Quirks]] [[HavingABlast Explosion]] and [[MakeThemRot Corrup-ject]]. Explosion allowed the user to secrete nitroglycerin sweat which could be used to create explosions while Corrupt-ject allowed the user to infect non-living things through skin contact, which would cause these things to break down over time]] [[/labelnote]]. This was the Quirk made with Bakugou's Quirk. It allows Izuku to turn objects into explosives.

* AntiHero: Midoriya genuinely wants to become a hero but his paranoia regarding his secret Quirk cause him to go about achieving that goal in less than pure methods. He created a Quirk specifically to cut people if there is no other option, trespassed onto private property, melted a warehouse's lock and constantly lied to his mother.

** [[SuperStrength All-Star]] [[labelnote: Combined Quirks]] Pitch and Punt [[/labelnote]], which allows him to multiply the strength of a throw or a kick.

** [[HealingHands Freya's Garden]]. This allows Izuku to grow moss onto people to speed up their healing. He can also use it on himself to give himself a bit of a HealingFactor.
** [[SummonMagic Dark Familiar]]. While not actually magic, Izuku can summon creatures that are made from the tattoo on his back. This is currently the only mutation Quirk Izuku has mainly because [[spoiler: mutation Quirks tend to be permanent]].
** [[HavingABlast Land Mine]]. This was the Quirk made with Bakugou's Quirk. It allows Izuku to turn objects into explosives.

* LogicalWeakness: Sequencer can copy quirks from DNA Midoriya ingests but Midoriya still needs to ingest DNA for it to be effective. Before he made X-Claws, Midoriya kinda just hovered around kids until they hurt themselves, then escorted them to the nurse's office while quietly collecting blood samples beyond the notice of others. In fact X-Claws was made specifically to circumvent this as it provided an easier and more effective method of obtaining blood.
* NiceJobFixingItVillain: Downplayed. Bakugou's not a full blown villain but he is a [[TheBully bully]] and it was thanks to his bullying that Midoriya awakened his Quirk and [[HoistByHisOwnPetard later showed him up]].

** [[SuperStrength All-Star]], which allows him to multiply the strength of a throw or a kick.
** [[BlowYouAway Pneumatic Cannon]], which allows Izuku to condense air and then fire off the condensed air as a projectile.

** [[ExtraOredinary X-Claws]], which allows him to turn his fingers into sharp steel claws.

* OhCrap: Bakugou has this reaction when it looks like he's accidentally killed Midoriya. Whether this is because he's realized the [[MyGodWhatHaveIDone severity of his actions]], because [[LaserGuidedKarma he's afraid of the consequences]] or because he was just [[DeerInTheHeadlights in shock at seeing a potential corpse at his feet]] is unknown.

** PlasmaCannon, which essentially allows him to fire off plasma blasts. As this was his first combination, this tends to be Izuku's default Quirk.

* DidNotThinkThisThrough: Izuku in regards to the creation of Dark Familiar. While the Quirk itself is certainly a viable Quirk, Midoriya failed to realize that [[spoiler: combining a Mutation Quirk would likely produce a Mutation Quirk, which would cause a permanent mutation to his body. Not quite what he needs when he's trying to be discreet. Fortunately, the mutation in question is just an ink pool on his back which he can shape into tattoos but it's still an unnecessary factor that he needs to take into account when making a cover story]].

* {{Irony}}: Lampshaded in the first chapter; "Ironic that in a world of people with powers, abilities, and random mutations, the person born completely normal would be called the freak".

* OriginalCharacter: Dr. Shirai is the Midoriya's damily doctor after Dr. Tsubasa was deemed to be too cold and blunt towards Izuku.

* AdaptationalVillainy: Downplayed. For the most part, Midoriya is a genuinely heroic person but he has started to develop more anti-heroic qualities. He now has a tendency to manipulate others so that he can get their sequence and on one occasion even deliberately caused harm to an individual just so that he could get her Quirk. He tries to justify at as the [[IDidWhatIHadToDo ends justify the means]] but he still feels guilty when he does something not-so heroic. [[spoiler: It's because of this that he doesn't believe he's worthy to succeed All Might]].

* WhamShot: [[spoiler: All Might's Quirk is shown on the third spire meaning it was already pre-made and revealing that All Might is hiding something huge]].

* AdaptationalVillainy: Downplayed. For the most part, Midoriya is a genuinely heroic person but he has started to develop more anti-heroic qualities. He now has a tendency to manipulate others so that he can get their sequence and on one occasion even deliberately caused harm to an individual just so that he could get her Quirk. He tries to justify at as the EndsJustifyTheMeans but he still feels guilty when he does something not-so heroic. [[spoiler: It's because of this that he doesn't believe he's worthy to succeed All Might]].

* SuperpowerLottery: Midoriya wins this ''big time''. He can permanently copy a person's Quirk. While he can't use it as is, he can combine it with other Quirks allowing him potentially limitless possibilities for what he can do (assuming he can find the right Quirk). He can even copy Quirks that are already artificially combined like [[spoiler One For All]]. See ComboPlatterPowers.