#leviathan fic

THE DEAL WITH BIT: bit was "retro's kid". he'd been kidnapped at a young age to be used as a living battery for retro's inventions, which he would use for, well, villainous purposes. bit had discovered an ability to override inventions he was powering. retro had wanted bit back to see his full capabilities. literally... i think the next chapter of the fic would have been shigaraki settling debts, and sending kurogiri to kidnap bit. izuku would have jumped through the portal after him, getting both of them captured. kurogiri, in a hurry and frustrated, would have ended up giving them both over to retro, then leaving. the subsequent sequence would have involved izuku panicking and accidentally revealing to bit that he was the leviathan. bit would have said that he'd known, or at least suspected. they'd then later team up to take down retro, with izuku forced to re-awaken the parts of the leviathan he'd been surpressing. bit would have served as... something of an anchor for the rest of the story. the only person who knew, but bizarrely (to izuku), didn't blame him for any of it. this would have been a point of contention between them, at times.

sometime after this, blade (who lost an arm to the leviathan) would have been released from the hospital. he would have gone to the league of villains to share his discovery that izuku was the leviathan, startling them. all for one would have found this incredibly interesting and decidede to observe izuku closely going forward before making a move. (shigaraki and kurogiri are pissed. they JUST HAD HIM. and they gave him to RETRO, who FUCKED IT UP.)

UA SPORTS FESTIVAL

really the only thing i remember about this was that izuku was effectively immune to shinsou's quirk. his constant mental battle made him essentially a psychological brick wall; he could shrug shinsou off like it was nothing, to shinsou's frustration.

he would have allowed shinsou to mind control him during the actual SF fight round, losing early on. he'd never really properly explain why to shinsou, frustrating him. i think shinsou ends up being the one to fight todoroki and them having A Moment? because izuku is really not the one for like. the evil quirk conversation, ha. todoroki comes to some revelations about his quirk and his personhood, but still lets shinsou win to stick it to his dad. this is... kind of bad for shinsou's plan of not showing people how his quirk works, but he's 14 and riding that attention high for all it's worth.

INTERNSHIPS / VS STAIN ARC

don't remember like. most of this. but izuku would have interned with ryuko tatsuma (the dragon shapeshifter lady) in hopes that her quirk worked a little like his, but would have come up empty. he would have been in hosu for the attacks, and joined iida and todoroki in taking down stain. that fight would have been pretty brutal, with stain fascinated by izuku. he'd give his whole who deserves to be a hero spiel, which izuku would have torn to shreds, ending with the lines,

"but above all, there's on reason i know that your method of choosing who deserves to be a hero is wrong." "and why is that?" "you chose me."

^ taken from ye olden discord beta chat.

FOREST TRAINING ARC

i think this was where the mall sequence was? regardless, at the mall, shinsou is approached by shigaraki, who would grin at him and say some incomprehensible things about him being a "god tamer" and "friend to the most powerful monster in the world". he'd mention this later to midoriya, which sends him into a paranoia spiral.

and then there's all the forest training stuff, izuku is incredibly off-kilter the whole time and kind of manic, and of couuuurse he would have been the one targeted by the league of villains and kidnapped out from under everyone's noses. they panic.

after getting everyone (that they have) home, and contacting authorities (including my lovely naomasa <3 miss you baby) they would have gotten a video call from an unknown number. all for one would have spoken to them all directly, before cutting to a video feed of izuku in an enormous cell, where he would have been forced to activate his quirk, revealing him to be the leviathan to UA staff and some authorities. all for one would have thanked the heroes kindly for holding him for a while, and said that he'll take it from here.

all for one would then have taken the leviathan quirk from izuku. however, when he'd attempt to use it himself, he'd find it only a mild shapeshifting quirk; the ability to turn a little lizard-y and cough some sparks, but nothing more. out of fascination, he'd give the quirk back to izuku, and find the usual monster awaiting. he'd take and give izuku various different quirks, and find all of them effectively superpowered out of control. fascinated, he'd leave izuku with the leviathan quirk and send his scientists in to do some tests.

the following revelation would be twofold. all for one's scientists would discover that izuku's body was constantly maintaining a high density of [insert chemical here]-- the same active ingredient in the drug trigger. inko midoriya would also reveal to someone (maybe an undercover operative?) that she'd been a victim of the trigger attacks (from BNHA Vigilantes, which I loved at the time, ha) while she was pregnant with izuku. the effects of trigger on a pregnant person had never been even considered, let alone documented. the result was a child with a permanently trigger-ified quirk that went out of control the second it manifested. they tell izuku this and he's like ...oh.

HIDEOUT RAID ARC

the heroes are obviously assembling to raid afo's hideout POSTHASTE, with the heavy awareness of Just How Badly This Could Go hanging heavy over their heads. like canon, the kids also decide to go help and rescue izuku, joined by bit! who is laughingly Extremely Wary about the whole thing, and kind of vaguely implying that they should be ready for something bad. they yell at him for being a pessimist. he stays quiet.

i don't remember exactly how this went in canon but the opening at least would be similar enough to that. Big Fight, kids manage to rescue izuku, whatever. then they look up, and afo is kind of mopping all might.

izuku would have tried to run back into the fray. shinsou would gone after him to stop him, but izuku would have shaken him off, revealed himself to be the leviathan (with the air of a goodbye), and gone full-transformation. this would have revealed his identity to shinsou and his other ua friends, with bit there to explain a little bit to try and calm them down.

izuku, working together with the leviathan for the first time and thus able to actually kind of control himself, would have been able to work together with all might to just fucking smash afo. battle of the gods, in a way. all for one would have died here (at all might's hands. no more grief for the kiddo.) and izuku ends a fight conscious and in control of himself, for once.

after everything, izuku is taken into custody (bit is VOCALLY against this but overridden) and placed in a holding cell with quirk suppressants (which is weirdly nice! it shouldn't be! but it is!) where he talks to naomasa. he comes clean about everything, including what he's learned about the permanent trigger enhancement. naomasa is APPALLED, and is like, sorry? you've been on trigger constantly since you were four? and izuku's like yyyeaahhh haha. and naomasa is ... frankly horrified, by all of it, but promises to get him help.

and they do! izuku goes on quirk suppressants, since there's no real... trigger suppressant in existence, yet (they have to play with the dosage a bit). they also kind of realize "the leviathan" (the one in izuku's head) is... basically how his brain has learned to conceptualize what's happening to him. and even then, the leviathan isn't evil; it's just overwhelmed, in pain, and scared. izuku comes to terms with all of this, which combined with the medication, makes it possible for him to comfortable control his quirk for the first time in his life.

he tells his mom everything, she's horrified, they cry about it. he tells his friends everything, they forgive him. he talks to bit. he even talks to blade in jail, i think. but he goes forward with an actual support system, and does end up being the underground hero he always wanted to be, with a focus on kids and people with "out of control" quirks who people want to write off.

misc emotional beats:

shinsou would have assumed izuku's repression of the leviathan (post USJ) to be an attempt to stop reminding them about the leviathan; he would have told izuku off for beating himself up for having a "villanous quirk", said some flowery stuff about self-perception, and told him that he was nothing like the leviathan. ouch.

while the story would have been gen, izuku and shinsou would have gotten a lot closer. i was (and honestly? still am!) a big shindeku fan and think they have a fun dynamic, in canon and aus. this would have been interesting, because it would have led to a lot of miscommunication irt izuku trying to hold shinsou at arm's length because of his leviathan guilt, and shinsou not understanding why. maybe they could have had a big fight about it right before izuku gets kidnapped during the training camp arc.

izuku would have gotten closer with iida and uraraka as well, explored some of their issues/ todoroki.... maybe? i'm not sure. i have terminal "gets annoyed by the most popular ship in a fandom" disease, so i was never a huge tododeku guy. but they probably could have had something interesting.

i think izuku and naomasa were also supposed to talk a little more? since naomasa was one of the people present at OG leviathan incident, their relationship was meaningful. also i just really like naomasa, as people may remember.

i legit have no idea what would have happened with bakugou. i didn't really... care about him, then? and i don't really now (though i'm much more ambivalent than i used to be lol). he might have gotten some occasional beats of self-reflection, but i wasn't ever really that interested in giving him a Big Coming Around Arc. i do in retrospect think I could have; putting him in 1-B set up an interesting situation for him to be with the """"lesser"""" crowd and learn to see them as people, and himself as one, too.

mirio gets all for one, most likely. or kirishima, or something. maybe he offers it to izuku, but izuku is like HELL NOOOO. sorry. no thank you.

and... that's that. it's weird to write all this out. this is actually the first time i've ever seen it all laid out. there's probably some stuff i'm forgetting, and maybe i'll come back and update later, but this is fine for now.

this story... was never meant to be about anything, really. i just started writing it because i wanted to write a bnha fanfic, and i liked quirk!izuku aus. all impulse, all just vibes. i still think it's not necessarily a Big Meaningful Message. but i was talking to people the other night about stuff, and realized something, kind of. when i was writing all of this, I had no idea. but in the time since, i've been diagnosed with a mild-ish form of psychosis and OCD.

so... make of that what you will.

His tongue pokes out to wet his lips, heart thundering against his ribs, and his fingers tighten against the controller in his hands.

“Ittadakimasu,” he whispers, an edge to his voice that reflects his hunger. You blush, realizing how turned-on he is by your words, but don’t have long to think on it. The tentacle wrapped around your leg inches up to meet your womanhood—rubbing it through your leggings.

You gasp, arms straining against their restraints, but of course it’s no use.

Behind you—perhaps purposely hidden, so you can’t see the words—an array of options appears.

✕ – Play with breasts

◯ – Rip off clothes

△ – Spank

□ – Fuck pussy

Levi reads through them quickly. All of the choices are tempting, but he doesn’t want to be too rough with you starting off.

His thumb hits the ✕ button, and a tentacle wiggles forward—curling around your waist and then wrapping around your breasts. You keen, thighs pressing together as heat begins threading through your limbs. Even while clothed, the sensation of having no control while being touched in your most sensitive areas is more arousing than you’d care to admit.

The tentacle at your chest curls around one of your breasts—squeezing, and tugging at the mound. Your other breast is prodded at by the round head of the purple appendage—attempting to locate your sensitive nipple through your clothing.

Again, an option appears on screen.

RB – Remove shirt

Levi’s finger hesitates over the bumper, precum beginning to pool against the crotch of his sweats. What he’s doing feels like a crime, but…your words of reassurance resound in his head, and he pushes the button.

In reaction, the tentacle at your chest momentarily stops its ministrations—diverting downward. The slimy arm sneaks beneath the hem of your t-shirt, crawling its way up between your breasts. And then, with a might tug away from you, it rips your shirt up the middle. Your bra is the only thing left shielding your chest away from public view, but it doesn’t stay in place for long.

Apparently part of a package deal with the “Remove shirt” option, the tentacle yanks the lacy white fabric away from your body—the garment disappearing from around you with a definitive rip. Immediately your breasts spill into the open air, and you flush bright red, realizing that this is the first time Levi will have seen any part of you so intimately.

Seated in front of the PC, the Avatar of Envy sets his controller atop his desk—prepared to push the buttons with one hand (no matter how lame of a gamer it makes him), while his other hand finally sinks into his lap. He palms himself through his pants, nearly moaning at the momentary relief. However, he doesn’t give into his desires just yet—his eyes still glued to the screen as the monster begins toying with your tits once more.

This time, with no fabric in the way, you’re feeling much more sensitive as the tentacle resumes its movements. The purple limb wraps around one of your breasts, pulling and squeezing the soft flesh, while the head of the tentacle swirls around your hardened nipple. You tremble at the feeling, managing to hold in any sounds that threaten to escape you…at least, until an additional tentacle hovers over your neglected breast—the end of the limb opening like a pair of lips. It wastes no time locking onto your nipple—sucking harshly and causing a lewd gasp to escape you.

Finally, with two tentacles assaulting your tits, and a third still rubbing between your legs, you’re beginning to fall apart at the seams. Your breathing becomes unsteady—whines and moans rolling off your tongue as the monster continues to follow Levi’s commands.

While you can’t hear it, the purple haired demon’s breathing has turned rugged as well. His dick is so hard now that it’s painful, but he still doesn’t grant himself relief. Not yet, not like this.

“Levi,” you moan, and you hear a quiet groan in response. The Avatar of Envy reaches down between his legs to pinch the base of his cock—stopping himself from cumming at the sound.

“Shit,” he curses to himself quietly, his eyes flitting back up to the computer when another round of choices appear.

✕ – Fuck pussy

◯ – Fuck mouth

△ – Fuck ass

□ – Other

Heat creeps up Leviathan’s neck as he reads through them. The game had been equally as blunt on previous levels, but now that you’re involved, he wishes there was some sugarcoating in place.

His pointer finger moves to hover over the ✕, but he hesitates. As he mulls over the many thoughts in his head, your moans reach his ears once more, and he immediately makes his decision. He won’t last if you continue sounding like that.

In game, you begin to whine his name—needing something more, anything—when all of the sudden your mouth is filled. You gasp, your eyes squeezing shut as a tentacle presses between your lips—the slick limb moving across your tongue. The monster fucks your mouth at a steady pace—testing the waters. You gag when the tentacle ventures a little too deep, and it seems like the game takes note—lessening the frequency in which it forces you to try and deepthroat.

However, each time you gag, your nipples and clit feel more sensitive than before. At this point, the lack of true contact on your womanhood is turning into torture, and you whine around the length in your mouth—your thighs rubbing together around the limb still sliding up against your pelvis.

Levi understand what you’re asking, and taps □. Instantly another line of options appear aside from the main ones, and Levi is relieved to find the one he’s searching for.

LT – Give oral

He hits the trigger, watching as the tentacle tending to your lower half pauses in its job. It reaches up to grab the waistband of your leggings, and in one fell swoop tugs them down your legs. You squeal at the sensation—eyes popping open and glancing downward, attempting to see what’s occurring.

You note an additional limb sliding across the ground towards you. It reaches up, curling around one of your legs, and hiking it off the ground. Suddenly, your pussy—shining with your arousal—is very much on display for Levi to see.

“Oh, fuck,” you hear him groan, wishing you could see him. Knowing that what he’s doing to you is getting him off makes your pussy clench, and you wonder if that’s his plan. However, the tentacle that had been teasing you up until now doesn’t fill you as you expect it too. Instead, the tip of the tentacle peels open—a smaller appendage sneaking out of the opening.

To you, it looks similar to a tongue.

“Mmph!” you gasp when it licks between your folds—finally coming in contact with your aching clit. Your spine curves—hips pressing downward as tentacle pleasures you in earnest.

Tears prick at your eyes—the amount of sensations afflicting your body at once almost overwhelming. You mouth is full—tits being sucked, and licked, and squeezed—and now your clit is getting the attention it’s been so desperately craving. Really, it’s enough to drive you insane.

Eyes squeezing shut—your thighs shake as the pressure building in your gut threatens to snap.

“Please cum, Y/N,” you hear Levi beg—breathless. You’re not sure if you had been meant to hear his silent plea, but it’s enough to push you over the finish line.

You climax with a cry—the sound muffled by the tentacle in your mouth as its rhythm slows—sensing your release. The tongue between your legs continues licking—dragging as much pleasure out of you as possible—while at the same time the tentacles on your breasts give the mounds one last round of love.

By the time the waves of pleasure have diminished, your arousal is leaking down the inside of your thigh.

Above your head, a bold “LEVEL COMPLETED” appears in the air, and the tentacles begin to retreat. You breathe deeply as your mouth is freed—the slippery limbs uncurling themselves and returning to the main body of the monster. And—as soon as your feet touch the ground, and your wrists are released—the scenery around you shifts.

Levi’s hands scramble to grab you as you materialize beside him back in his room—your legs giving out as he does so. You slump against him, still struggling to catch your breath. You’re relieved that it’s over—you’re not sure how much more of that you could have taken—but you’re jumbled out of your serenity as Levi hefts you up so you’re seated on the edge of his desk.

“Levi?” you question, eyes darting up to his face. There’s a serious look in his eyes, and you watch in surprise as the Avatar of Envy shoves his sweats down his thighs—his cock weeping against his abs.

“I’m sorry,” he says, swallowing your groan with a sloppy kiss as he slides his length between your walls. His voice is shaky—he’s been holding back for too long. “I need this. I n-need you. Please.”

“Fuck, Levi,” you groan, your pussy tightening around him as he begins chasing after his own release. His pace is quick, and sharp. It’s clear that he won’t last long. He had been waiting for this—for you—and while you know you won’t be able to orgasm with him—you can at least egg him on.

“You feel so good,” you speak, tits bouncing at the intensity of his thrusts. Your hands reach up to hug his skull—the demon’s breath hot against your neck as miniscule whines escape his throat. His grip on your waist tightens—blue colored fingernails digging small crescents into your skin—and with a few more snaps of his hips, he’s releasing inside of you.

“Fuck,” he chokes, forehead pressing against your collarbone he rides out his bliss.

After a moment, he pulls back—his cock slipping out of you, and immediately his seed is sliding from your heat—mingling with your own arousal. The sight has you both turning a bright shade of red, and Leviathan begins to panic—his head whipping every which way in search of a towel, or literally anything.

You laugh at him, your hands reaching up to grip his sides, and he finally pauses. His gaze turns back to you—his orange eyes shy now that the intensity of the situation has died down, but you only smile at him. Tired, but reassuring. Like always.

“Did you enjoy yourself?” you ask, giggling when Levi sheepishly nods his head. “I’m glad then.”

“I’m sorry,” he speaks up after a moment, his hands reaching beneath you. He cradles you in his arms, carrying you to his bed. “Please don’t hate me now.”

“I could never,” you tell him honestly, your palm cupping his cheek as he bends over to set you down. His eyes meet yours—still apologetic—and you cough, your face turning pink and gaze darting away.

“And besides, I…um…actually really enjoyed that. So please don’t feel sorry.”

A wave of relief washes over Leviathan, and he topples you over with a hug.

“UGH. I was so worried! But man, that was sooooo hot!! I can’t believe you let me do that to you, and you enjoyed it!! I knew I liked you for a reason, Y/N!”

His outburst of emotion has you giggling—his face rubbing against your chest as he releases all his pent-up feelings. However, after a minute his words and movements stop, and you open your eyes, glancing down at him.

He’s looking at you with a serious face, but his eyes shine with excitement.

“Can I import you and start the game again? Oh! Or, if I buy more games like that will you let me make you my main character? Please?”

“I--,” you’re not sure what to say—feeling embarrassed all over again at the idea. He seems so enthralled by the idea, and while you’re completely flattered that he’d enjoyed the experience so much that he actually wants to do it again, right now your brain isn’t able to entertain the thought. You’re too exhausted.

“M-Maybe?? Ask me later.”

“Huhuhuhu okay~!” he giggles, hugging you tightly once more, and you can’t help but smile.

As dorky as he is—the Avatar of Envy is as equally endearing.

“Hey Levi?”

“Hmm?”

“Why didn’t you make the monster fuck me in the game?”

Your question has him turning pink—his gaze shying away from you.

“Because…”

“Because?”

“Because yourpussyismine--!”

You frown, not understanding.

“What?”

“Because your pussy is mine!!” he yells, his embarrassment exploding as you force the admission out of him.

Your eyes go wide, cheeks reddening at his declaration.