Disclaimer: I own neither BNHA nor Harry Potter and its characters.
AN: I really love how some of y'all are comparing this work to some horror genre stuff when it wasn't actually intended to be like that at all. So, no, for those who have asked, the dark vibes wasn't what I was aiming for. It just is. Loving the reviews though, happy reading and hope you enjoy!
VI.
Gradually, Izuku started to tag along whenever Papa did jobs at home or outside. Harry had been reluctant at first, but folded like wet tissue paper when his son's tears started to soak it thoroughly.
During these little outings, Harry took it as an opportunity to teach his treasure the difference between necessary torture and malicious harm. Personally, Harry wasn't a big fan of making someone suffer for the heck of it and he made sure Izuku knew which was bad, and which was worse.
"It's disrespectful to Death if you kill a person who doesn't deserve it. It's disrespectful to both yourself and your kill if you hunt an animal without purpose. When putting down an animal, always make sure that you'll finish eating its meat, or make use of its pelt or else it's wasteful.
The kill must always be painless, do not make it suffer. It's giving you something, so the least you can do is give it a peaceful and painless passing. That said, if you see any young nearby, don't kill the parent or child. We must always give as much as we get, my heart. For that's what it means to be humane."
After quickly slitting the throat of a male hare, Harry even taught Izuku how to properly skin the animal and identify which of the insides were edible or useable. Smoking the meat wasn't the most fun lesson, but learning ways to preserve it made up for any of the coughing fits Izuku would choke on when the smoke wafted his way.
Harry had to work on an independent mission once, staking out whatever folks the League had their eyes on. He conveniently took Izuku out for that trip too. Seeing it as a chance to teach his son a thing or two in case his son ever had to wander out in the wilderness like he did all those years ago.
Hunger was an experience he never wants his son to feel, neither the icy dryness of frigid winds that blew when a warming charm wore off as the ice beneath melted into water.
Tracking lessons came afterwards, so did stealth- useful for finding live prey or surprise attacks of your enemy. The young child learned where to make the blood drain fastest and which organ, once punctured, caused the meal to go bad.
He was taught how to track the stars and send prayers of thanks to the rising moon and setting sun. High on adrenaline after each long day, Izuku took to hoisting up tents with his father just before the sweet blanket of night unfolded with time.
Elation was clear on Izuku's face when he'd learned the how-to at first. The new All Might tent they'd bought from the store down town contributed a lot to the excitement. Harry didn't forget to take a picture of Izuku sleeping against the tree next to their first finished product.
The mission had also been during winter, so Harry even managed to teach his dear son which woods were alright to use- not too soggy, else the fire wouldn't light. Easy to say, Izuku learned many things over the 2 and half week trip.
He'd even managed his own rabbit after the fourth day; it was his first experience with taking the breath of a living thing that weren't mosquitoes or ants. Uncle Death had been very pleased to find out that his Master's son respected the lives of commodity that once taken, was forever sold.
VII.
A week before his eleventh birthday, Izuku had somehow managed to persuade his father into celebrating it in Kurogiri's bar. Papa looked immensely worried, a frown on his face that caused multiple lines to appear. Siri wasn't at all helpful in the dilemma, busy trying to fit his furry head underneath Izuku's armpit for more pats.
The thing was spoilt beyond compare, honestly. Or so Papa liked to say, even wondering out loud if it even remembered its function as a guard dog from Hell.
Delicately, the man implied for a change. The deadly slyness of a Parselmouth-loyal snake would do wonders to ease his concerns. Additionally, those beautiful creatures tended to have a wonderful goal-oriented mind as well.
Izuku only glared in response, partially because he was weak to Siri's adorable puppy eyes that literally took down a Villain once and also because he'd grown heart-wrenchingly attached to the oversized dog that had been with him since he was a crawling toddler.
"Siri's a good dog, Papa." Izuku grinned cheekily after hearing Siri's pitiful whimpers. "When I was going back from the store the other day, a shady looking person dragged me into an alleyway before Siri came out of my shadow and burned him to ashes! Who's the best-est boy, Siri? You are!"
The hell hound borked.
Izuku held full confidence and trust in Papa's creations. The man wouldn't forgive the dog and himself if it really did become compliant with comfort. Additionally, Papa was very thorough with his self-defence and Magic lessons. More so while normal children memorised their parent's phone numbers, Izuku had to know how to summon Death and its Master by heart.
It was a long recitation, to say the least. And a person had to mean it when they said he or she'd sacrifice so and so for this and that.
After much contemplation and crocodile tears on both adult and child's part, they arrived at the dingy place via silent apparition. Izuku felt himself gaping with awe at the rather… unique ambiance.
This was the place his Papa worked. "Wow~" Giggles escaped him thinking about the League of Villains having bring your kids to work day.
Upon seeing the familiar figure in a bartender's uniform, Izuku immediately ran up to the counter, practically vibrating in his seat. "Giri-sensei! Good afternoon!"
"Good afternoon, little Izuku. Have you been practicing your charcoal techniques?"
Izuku nodded, proceeding to babble away before Papa landed a gloved hand on his head. "Izu-kun, this is Shigaraki Tomura-kun. He's 3 years older than you." Passing a brief glance at the blue-haired teen, "I hope you two get along. He's the charge of Papa's Boss."
"Hisashi…-sensei, I don't see the point in associating myself with this brat. I'd like to go back to my room to play the game you got me the other day."
Izuku pouted while Papa chuckled darkly, putting a finger to his round, golden-framed glasses. "The game you accepted with the promise to at least try to be civil with my son? Izu-kun already knows that not everyone will love him in our world, but you haven't even attempted to fulfil your end of the bargain."
Grunting, fingers reached to a scarred neck which Papa swatted away kindly. "I don't fancy being disappointed, Tomura-kun."
"… Fine." Shigaraki clicked his tongue. "But you'll come by more often, Hisashi sensei?" He ended softly.
Papa bent down, reaching the teen's eye-level. Conjuring a blue-cased chap stick, he started applying it to Shigaraki's chapped lips. "Of course. You're my cute student, after all."
Surprisingly, Izuku and Tomura got along pretty well. They bonded over their love for games and it'd been an unsaid agreement that Izuku wouldn't speak of his admiration of Heroes- which had honestly waned a bit since he was a child.
Nevertheless, if Heroes were off the menu, Izuku could adapt with the large repertoire of villain analysis he genuinely liked talking about as well. The hobby had expanded with the loving coaxing and unconditional support of his father; Izuku took apart anything that walked and talked now.
People watching was an actual thing, okay? Tomu-chan was just being plain rude. It came with his friendship bar after unlocking his character page.
It escaped his notice when his Papa quietly left the bar to meet the man who thought he had the world in his palms. All the while unaware of the Otherworldly Being who could end his life and free will with simple words.
(It had been too late then, but All for One couldn't remember when he'd come to trust Midoriya Hisashi enough to go clash head to head with All Might a few years too early.
Just when had this game of chess begun? From the night of blanketing winter mist, underneath the moonlit night whereupon he'd offered to take in the lost, wandering man with eyes that glowed brighter than the essence of his brother's Quirk?
Chained to multiple machines, mantles weaved from shadows were passed. Under the rule of Death's Master, the League now existed for one reason only and Izuku didn't even know it.)
VIII.
He was awoken by the sound of a familiar click sliding into place. Dad had unlocked the work door, it seemed. Coincidentally, Izuku had extra portions of dessert that night, so sleep was hard to come and easy to leave.
It was a bad habit which Papa often blamed poor genes for, but Izuku was too curious for his own good. Much like his Dad when he was younger, as he'd heard the stories from Uncle Death. Like a proper Slythindor, the entity mirthfully described.
The freshly teenaged Izuku crept out of his room and slipped past the locks with an effortless Alohomora. His father wasn't around anymore, the young teen checked beforehand. Maybe he had other things to do first? It wasn't like him to leave guests unattended.
Seated on the less than comfortable chair in the middle of the room, was a belted up man who could pass for a homeless person from looks alone. Shallow cuts riddled his face, as if shards of glass had exploded nearby and he'd been their pitiful victim.
Just to be safe, Izuku gave the man a second glance down from head to toe. Other than the obvious, he couldn't tell if there were any more injuries than that from the fully body of black he wore.
Knowing nothing less from his father, the man shouldn't have been allowed to keep any weapons on him; it didn't stop the slight shiver that shot up Izuku's spine from stranger-san's next move, though. He really did remind Izuku of a chained and cornered animal.
The wild-eyed glare from the long-haired man was piercing, lisp pressed together into a grim line. Pissed off expression aside, Izuku had a feeling he deserved lots of sleep and a glass of water for all he'd been through- whatever it was.
Thankfully, based off the fact Dad hadn't even put him under a light self-sustaining Crucio, the man must be either a potential ally, real-deal hero or an all in all decent person with power or influence at his disposal, to sum it up. Safe to say, Izuku might actually take up on that thought of offering a beverage.
It was only polite, after all. Besides, he'd always wanted to try practicing all that pure-blood etiquette he read about that his Dad thought Izuku's didn't know about. The 7-inch thick book laid stashed at the back of the office room drawer, untouched once upon a time. Uncle Death said that it had been a gag-gift from a childhood enemy-turned-friend of Harry's. A morally interesting specimen by the name of Malfoy Draco.
"Good night to you too, sir." Izuku greeted jokingly, all while in his All Might onesie he wore with pride.
Tired eyes darkening, Izuku found himself under intense scrutiny before it fell into mild irritation. "Damn it," the man muttered dryly, head hung downwards. "Of course there would be a (fucking) kid."
"Hey. I need you to help release me, kid. Then we'll both leave and I'll get you out, okay? I'm a Hero, you can trust me."
Izuku laughed softly into his fist. "You certainly aren't a Villain; I'd know better than anyone about that. Don't worry, though, Hero-san. My father certainly wouldn't pass you along to the Shinigami if you didn't deserve it."
Dry eyes popping, the man wheezed. "You're the Master's… son?"
"Yeah," Izuku nodded enthusiastically.
"By blood? Someone let him reproduce?"
"Your tone's giving me a lot of questions, but yes and yes to both questions. Don't worry, I'm not offended at all. The name's Midoriya Izuku, 13 years old and currently aiming to enter UA in 2 years to become the best Hero ever! At your service, sir!"
"What?"
Izuku startled when Papa teleported into the room with no warning and a thermos of (likely expensive) coffee in hand. When he saw his son, the man gave Izuku a fond ruffle of the inherited mess of hair. "Why aren't you asleep yet, my little serpent?"
"Ate too much chocolate for dinner." Yawned the teen.
"Is that so," Dad's eyes crinkled with amusement.
"Back to bed, then. I can see you're getting tired. Practice some of your occlumency if you truly can't sleep. Eraserhead and I need to have a little talk. Sweet dreams." Papa added when he knew Izuku wanted to ask some more about the rare guest. Like the identity of the previously unrecognised and elusive erasure hero, for example.
"Night." Izuku shuffled back lazily, dragging his steps while Siri playfully nipped at his heels. Perhaps if he had walked a little slower even after the door closed, he would've been able to pick up the soft words of a concerned parent with half-serious jokes about 'future PTC meetings'.
Sometime after the crack of dawn, Aizawa Shouta was mentally ready to hibernate until the next century once he was released from the leader of the League of Villain's confusingly non-lethal grasp.
Initially, he had been captured holding multiple questions and a stomach-full of 'Shit, I fucked up.', but later left with a hundred additional questions, including a full belly. The coffee was one of the best he'd ever tasted.
Nevertheless, the others back at headquarters would be more than just puzzled to find out about Midoriya's self-proclaimed 'necessary evil'. Shouta wasn't given a lot, to be honest. Only, building a disposable empire simply to keep for a child's ignorant words spelled disaster from miles away.
"Hizashi? Hizashi, I'm fine." Came the weary voice over the phone from where Shouta's husband of over a decade had been screaming in concerned panic when they lost contact with Shouta's phone and complimentary bug.
"Contact Detective Tsukauchi immediately. He- the Master's shown himself. He has a fucking kid, Hizashi. And prepare the bath for me. Thanks. I'm dead to the world till our next anniversary." A pause. "Which you'll wake me up for."
IX.
Izuku was finally allowed to go to school when he turned 14. By then, Dad had deemed him competent enough in non-verbal Magic- a feat not many wizards could've achieved in their lifetime. It was a pretty telling indicator of his talent, so the man was almost relieved to finally get his boy some friends that didn't kill other people for a living.
The teen was now also wise enough to keep a secret or two. Sure, Izuku's soft, chatty character may let some things slip here and there, but that was only if a person could keep up with his rapid fire mumbling in Japanese and English first.
Despite his confidence in doing well, Izuku still felt the murder of butterflies in his stomach when he introduced himself to the class.
Purposefully, Izuku never mentioned his Quirk. The teacher eyed him with puzzlement while the class burst out with noise. "What's your Quirk?" and other similar lines crowded Izuku as Siri rumbled within his shadow, unheard.
"Quiet down, class!" The female teacher ordered when she saw Izuku's expression cringe. Not a month ago, Mifune Yori was specially called in to meet the new student's parent when the junior Midoriya signed up.
None of the teachers at Aldera Junior High knew what to expect when the principle accepted a foreign aristocrat's son into their grounds. Midoriya Hisashi was powerful, bloody terrifying, and super protective over his son. Some of them might have even peed a little when the man fixed his toxic green eyes in their direction.
Therefore, Yori would like keep her little life intact for the next 9 months, thank you very much. Not having the young master tattle out complaints was one way to prolong her lifespan.
Immediately during the first recess, Izuku found himself surrounded by unfamiliar faces. His classmates clattered around his desk, their overlapping voices was a different experience compared to the calming silence of Kurogiri's bar. Obviously, as villains lived a life by laying low or brooding. Either required some form of quietness.
Clearly uncomfortable, it was awfully relieving when a guy with light blond hair in spikes suddenly exploded in the figurative sense. "SHUT THE FUCK UP YOU EXTRAS! All your aimless yapping is worse than a dog who's never seen a fucking bitch in heat before!"
"Language, Bakugou!" Came the teacher's distressed voice when the class immediately went mute.
'Wow,' Izuku then thought. 'I wanna be this guy's friend.'
Nicknamed Kacchan and Izuku were nearly inseparable afterwards, much to the blond's dismay. He was even extremely vocal about not needing any sidekicks this early in time; Izuku brushed the excuse off like it was dust on his shoulders.
Things changed when Izuku brought Katsuki back home for the first time. The boy was awfully twitchy when he entered the well-guarded (expensive, luxurious, at least 3, 000, 000 yen per square metre) apartment, and his scowled deepened when Izuku took out his key card before pressing on the button for the highest floor.
"What the actual shit on a stick fuck, Midoriya." He said, when Siri happily came out from his shadow to play. Izuku didn't fault him, the dog was basically up to his head from furry shoulders alone. Siri was huge when it wasn't purposefully down-sizing itself.
They did some homework before switching over to playing video games. Kacchan kept raging over failing that one turn on Mario Kart and losing. The blond then demanded for a gazillion more rematches that Izuku happily submitted a sore back and butt to.
Oh, that came out rather wrong.
Nevertheless, the best time of Izuku's life was when Kacchan met his dear Dad. His mother would've fainted at how obedient the explosive teen became in little over an hour. Almost docile, with the way Harry could tease Bakugou without (much) repercussion.
It was like Bakugou's wild animalistic instincts had overtaken his human mind immediately after it felt the utterly disparaging difference in strength between them. Submit, bare your neck. Don't let Death's Master take you.
Bakugou may not have appeared ecstatic when Izuku invited him over after that, but the blond wasn't exactly openly protesting either. In a way, Izuku thought it was kind of sweet how his Dad got a very reluctant new fan.
Bakugou could brood in angry misery all he wanted when Izuku mentioned his father. But it didn't matter because much to the green-haired teen's knowledge, there was unfortunately no denying the blossoming worship Kacchan harvested at the effortless power Dad wielded.
(Midoriya Hisashi was like hellfire. And Katsuki's Quirk required him to burn.)
X.
Izuku found it hilarious when Katsuki started to become his self-instated bodyguard. The green-haired teen might've still followed him around like a duckling, but Katsuki himself never stayed still when some of their classmates came up with puffed chests to taunt Izuku on his apparent 'Quirklessness'.
In a way, it wasn't even their fault because to be fair, the assumption was never corrected either.
It annoyed Katsuki to no end. Izuku could gleefully turn the extras that tried to tag along with them upon request, but became awfully anal when it came to denying the fact that Magic and Quirks weren't the same thing.
The best thing about the explosive boy's newfound dedication was the need to preen to his dad. Like a bird! He would boast about getting the best grades, or simply tell on his day if Harry asked. "Oi! Hisashi-san!" the blond would walk up to his Dad all gangster-like, even though anyone with a decent pair of eyes could tell that the teen was rattling in his skin to run up to the bespectacled man.
Personally, Izuku thought that the most touching thing was Katsuki willingness to hang out together despite finding out about Izuku's association with the folk that stood on the opposite side of the law.
The discovery itself was a quick, straightforward thing.
It happened only half an hour after school ended. Izuku could still remember it like it was yesterday. The light of sunset that landed gently on top of their heads as Bakugou had accidentally thrown a science textbook out of the window in a fit of anger.
The blond teen had blown a fuse when Izuku told him that Dad couldn't make it for the week's weekly Friday dinner. Like usual, he'd already packed his overnight bag, mind full of stuff to say to the man who'd mentored him in battle tactics for a while now.
"What the fuck?! I packed all my shit for nothing then!" Kacchan screamed into Izuku's face. The younger teen only shrugged, because what could he do really? Papa had an appointment with one of Japan's local Yakuza groups. 'Eight Precepts of Death', they're called, if Izuku wasn't wrong.
Both of them went to retrieve it once Kacchan gained some semblance of composure. Sheesh, it was like he'd never been denied anything in his life before. His Kacchan surely was quite the spoilt guy.
"Don't be unreasonable, Kacchan. Dad's gotta work to pay the bills, y'know." Izuku lectured while they walked down the stairs. It earned him a heated glare and a pleasant "Oh fuck off, Deku.".
The book had landed in the fish pond behind the school, coming up soggy and dripping with a fishy smell. "It's still kind of salvageable, I think." Izuku said lowly. Kacchan gave a short, self-righteous grunt in turn.
At the time, Siri wasn't with its young charge because his older master had to bring it down to Hell (where worked differently. A day beneath was a week on Earth) for a ritual check-up a few days back.
At first, no one knew that underworld vets were even a thing until Uncle Death informed them of so. Siri had left whining, contributing to the many scorches and ghastly scratches on the floor.
The slime Villain crept up on them with minimal presence- certainly enough to have had caught the boys off guard. Senses sharpening, Kacchan let out an instinctive explosion to beat down the threat. Yet Izuku was a step ahead- thus in seconds, the disgusting monster was sliding down lifelessly with a flash of green.
"Deku. You…" Kacchan stumbled with uncomprehending eyes.
His (fuck if he'd ever admit it) friend grinned, unregretful. "You have to make sure to put them down in a way that doesn't let them get up again. They can't hurt anyone else that way." Deku smiled wryly, but not at the same time. It was an ugly contrast of an expression.
"Are you afraid, Kacchan? This is also the kind of work Dad's in by the way, since you've been asking."
Conflict then flashed by quicker than a triggered bullet. Kacchan clenched his fists and a sharp canine bit his lower lip till it bled. Izuku waited, a heavy weight at the back of his throat. He had hoped to have not come to this so quick in, but alas-
It shouldn't matter what Kacchan thought, Izuku told himself. For although he may not be on the right for some, as long as he held faith in the good his beliefs provided, nothing could persuade him to stop.
The growl that escaped Kacchan didn't sound friendly at all, so Izuku braced himself for the worst. It wasn't as if it would be the end of the world if he lost the blond, but damn did the thought hurt.
"Who's fucking scared, shitty nerd?" His potentially ex-friend said, which made Izuku blink himself stupid. Huh?
"You and Hisashi-san ain't getting rid of me that easily. I'm gonna become the best and strongest fucking hero and I'll make you stop killing the shitty bad guys. Nobody deserves to die no matter how many shades of fucked up they are."
Izuku smiled till his teeth showed, the sight would've been unsettling if it weren't for the genuine (fragile) happiness he seemed to radiate. "Pretty ironic, don't you think? When you love giving out death threats." chuckled Izuku breathily. "But okay, Kacchan. I'll be waiting!" and there was that.
Several months into the friendship, and Izuku found it unsurprising when he gradually introduced the League's headquarters to his friend. Of course, he'd made sure to put Kacchan under a secrecy charm and all- Kacchan wouldn't be able to rat out their location that way- but, it was still… weird, in a way.
Izuku would've never imagined to have someone aiming to be a Hero accept his goals and ideals so easily. Undoubtedly, he must have had an eye for these kind of things. Already, he could imagine Dad's proud smile as he ruffled his son's messy green locks.
Unsurprisingly, Kacchan and Tomu-chan could not get along. Like, at all. Contrary to their similarly destructive Quirks, Tomu-chan found infinite glee in taunting the younger male which made them clash like water and oil.
It was a cringe-worthy battle of petty boasts as they underhandedly competed for the title of Dad's Favourite among themselves. Fighting by the bar was technically banned, after all. "Ridiculous," Izuku chided dramatically when he interrupted the testosterone-filled pissing contest. "Dad loves me most, obviously."
Katsuki, in the midst of boasting about the repertoire of tricks Dad had been teaching him about, lunged for the green-haired teen with a battle cry. Whereas Tomu-chan, on the other hand, scoffed with no little venom.
"It doesn't count, you little shit." The pale-haired teen rasped, fingers twitching in the pair of gloves Dad personally engraved voluntary on and off runes (Giri-sensei cried when he saw the reparation bills decreasing by the week). "Yes it does," Izuku pouted, "You didn't say so otherwise."
"You weren't even fucking invited, shitty nerd. Fuck back home and mind your own business." Spat Kacchan from the well-mopped floor, potentially pissed off (this time) because Izuku had easily side-stepped him and threw his bulky body over a freckled shoulder like it weighed nothing.