Chapter Text
Izuku was born from a long line of witches with mediocre power. His home village, Aldera, was known across the land as being a land of kindness, welcoming all types of people with open minds and hearts. They even set up an Academy of the Magical Arts here, as it was rare to find safe havens that would be agreeable with neighboring those who practiced magic or were tainted by magic.
The forest witch was raised here his whole life. His hair mimicked the vibrancies of the summertime woods. His freckles honored the earth he walked on. Eyes shined with the clarity reminiscent of crystals nestled deep in the nearby cave. His stature was lean and sturdy, giving him the ability to move effortlessly through the land he called home.
By all signs, Izuku was chosen by the earth. He was chosen to harness great connection with land and animals, able to utilize the life radiating from the land to produce powerful magic.
And powerful Izuku was. His ability could tear down buildings, uproot trees, slingshot enemies miles away, part rivers, and create stampedes.
The problem lied in the fact that those examples were all actual consequences of Izuku’s magic, not just theory. Powerful mana created disastrous results, bestowing the label of the Clumsiest Witch upon him.
The witch took it all in good spirits, laughing with the rest of them. But, honestly, he was growing exceptionally tired of the rhetoric. He just needed some control over his power and he could be the best witch the world has seen! He would leave the clumsy title behind.
Izuku practically lived in the library for the last few seasons, pouring over book after book. So many days spent hunched over paper and he finally found one tome that looked promising.
He did not quite understand the dialect, but that’s okay. It can’t be that different, right?
He spent weeks gathering supplies. Raven skulls, wilted red roses, virgin blood, clear lake water, murky lake water, cinnamon, cooked sugar, fermented grapes, sulfuric acid, and bat guano. Most were easy, some took effort. The amount of bat scratches the witch got was absurd.
The timing was perfect. He got the last of the guano and wilted roses on the day of the new moon. Izuku thought it was strange that the ritual called for a new moon, when a full moon would be brighter and tended to strengthen earth magic. But, whatever, right?
The man walked deep into the forest, finding a nice clearing for his work. With a deep breath and peaceful heart, Izuku began setting the ritual space. He placed candles at 5 points, using ashes to create the sigils noted in the old book to connect the items. The book in one hand and basket of ingredients in the other, the witch continued putting things into their proper places.
Finally, the forest witch stood in the center of the rune and sliced his hand, dropping his virgin blood onto the sigil below.
Candles lit themselves in a powerful breeze. Izuku stood tall as he could, feigned confidence fueling him as he recited the chant in the tome, stumbling over the dialect. He chanted and chanted and finally, on the 6th iteration, the candles extinguished, howls were heard around the forest, and a deep darkness flooded Izuku’s senses.
Spilled blood quickly took form, growing and morphing into an impossibly large figure born of fire. The figure had horns similar to a mountain ram, a large, chiseled chest littered with scars, furry legs sprouted from the hips. Hooves the size of Izuku’s torso steadied the figure on the grassy earth. Pale, smooth skin reflected the moonlight brilliantly.
A blackened hand lifted, the monster touching his own face.
“Huh, been awhile since I’ve had this form. How-”
Wine red eyes peered down and the clutsy witch who was absolutely freaking the entire fuck out. He had fallen back onto the scorched earth, staring at the beast with fear and caution.
A sinister smirk graced the creature’s face. Despite his demonic form, the guy was handsome. His face was sharp with a weirdly enticing smirk.
“Well, look at what we have here. By the smell of it you, my dear, are a witch.”
Izuku was so overwhelmed by life right now. So, obviously, he asked the most important questions.
“Smell?! What do I smell like?! What does that even mean? Who are you?!”
The beast began circling the magic wielder, sizing him up as chuckles rattled his enormous frame.
“Lots of questions, short stuff. First, you smell like,” the monster paused lean in close, taking a deep inhale of green curls. Fear and lust boiled in the witch’s belly, “mint, pine, and...cedar.” The entity continued to circle, nose to the air. “Your magic, on the other hand, smells like the entire goddamn forest, ocean, and mountains. The fuck are you, earth incarnate?”
“N-no! I’m just a simple witch. I-I was trying to do this ritual to help me get co-control of my m-magic…” the greenette stared at his feet shamefully, ass still firmly planted on the ground.
A snort pushed through the beast, making hair rise across the pale, freckled man. “I see now, little one. You wanted to master sex magic to learn true control, is that it?”
WHAT?!
Enchanted emerald eyes shot up to meet the bloody red ones above him, “SEX MAGIC?! WHAT ARE YOU TALKING ABOUT?”
“Hah? The fuck you surprised about? You did the ritual, though not amazingly well if I’m honest.”
Izuku whipped open the tome and showed the beast the ritual he was intending to do.
The demon squat low in order to read the tome, “Yeah, ‘Sex magic ritual for experts.’ That’s what it says. And you almost followed it perfectly, except you somehow fucked up the name and summoned me instead of Elbows.”
“What are you talking about? This says, ‘Connectedness ritual.’ A demon wasn't supposed to be summoned at all! It was just to connect me with my magic!”
“If you are from earth, then surely you studied old magic, yeah?”
“Ahuh. With runic language.”
“Yeah, no. See, demonic language is a subset of runic.”
“Shit.”
The beast howled, hands flying to the chiseled abs and head tossing back as he stood once more. “You dumbass. Well, you’re stuck with me until a contract is fulfilled. Do you even know what the contract is?”
“Given how badly this has already gone, can you just tell me?” Izuku had his elbows propped on his knees, head hanging shamefully in the center. He had messed it up yet again.
A truly sinful smirk graced the sharp features once more, “The contract states that until your magic is increased and you have control of it, you’re stuck with me. The fastest way to control magic can be sex, but there are other ways. I guess I’m gonna have to fuckin teach you.”
“Sex?! With you?! Why?! Maybe we should pursue other options! I’m just not sure I feel like committing to a demon and I’m very busy and-”
“Oi! 1. I’m the fucking Lord of Hell, so get that shit right. Secondly, who said we have to get married to fuck?”
Izuku.exe had stopped working.
“YOU’RE SATAN?!”
“Nah he retired. Old bastard got bored. Left me in charge.”
The witch’s jaw hung from his round face, trying to take it all in. Tears rapidly flooded mossy eyes, rivers forming down his cheeks.
"Oi, don't cry over failed spells, you idiot. It's not worth it. I'm here now, we'll figure it out, okay?" The demon had crouched once more so the crybaby witch only had to crane his neck a bit to look into those fiery eyes. He swore there were little flames living within the shiny irises. It was impossible not to be enticed by the sway of the inferno.
“I knew I could feel you spiraling. Let’s back up, alright? Name’s Bakugou Katsuki, Lord of Hell. You can call me Katsuki." A pause hung in the air until blackened fingers gingerly tilted the smaller man’s face up to look into his eyes, “There we go. Come back to Earth, you useless witch.”
“K-Katsuki. Okay. I’m Midoriya Izuku. I’m studying at the academy,” the mossy one recited robotically, brain still working overtime to process what was happening. Tired hands moved to wipe lingering tears off of his face.
“Nice to meet you, Izuku. Why don’t we get you home to rest, okay? Seems like you’ve had enough surprises for one night. Don’t want my dick to explode your heart, melt your brain, or some other shit.”
Izuku sputtered, so unbearably overwhelmed. He allowed himself to process as he stood and moved to follow the way back to his home with his…demon lord companion?
They navigated the twists and turns easily, the Lord of Hell stoically absorbing the surrounding area. Critical eyes scanned the forest.
"Looking for something?" Izuku asked, feeling compelled to know why infernal royalty would have even the slightest interest in the humble woodland he called home.
"Hah? Oh, no just observing. It's very lush around here."
"Yeah! We have a lot of talented witches and one of our vows is to care for the earth! I guess they made that a pact a few centuries ago to take care of the land after a witch scorched the entire place with dragon fire. The legend says the lands were broken for 257 years. Then, our founding mage All Might found his way to the deadlands and worked with the earth to restore the forest. Now, we all work in sections to keep the lands healthy. There are 20 of us who live in little cottages around the area. We are responsible for our plot of land. Mine is coming up!"
The misplaced ruler listened quietly, nodding along and making noises to signal to Izuku that he was listening. "I'm glad the old fuck came and cleaned up the place. It looks nice."
"Yeah! I, uh, am gonna apologize in advance. My land tends to be a little...chaotic," a scarred hand rubbed the back of his neck. "My magic tends to do whatever it wants to, which apparently means an inordinate amount of wild flowers. But there's also a ton of sunflowers! Those are my favorites. There's also a bunch of adorable little bumble be-"
Jade orbs glanced at their underworld companion, who was watching the owner with an eyebrow raised. A defeated sigh escaped Izuku at the expression.
"I am so sorry, please tell me to stop talking. My friends all do it and I know I can get very excited."
"Your friends tell you to shut up?" The demon replied quickly, seeming to be discontent with the information.
"Uh!!!" Izuku raised his hands, waving them frantically in front of him. "No, not all the time! Sometimes though. It's okay! I go on really long tangents a lot."
A scowl dropped onto the sharp face. "Why would they stop you? Looks like you enjoy talking about your land."
"Heh, yeah," freckled cheeks were warming rapidly. The land sloped downward, overgrown fields dominated the space between the two and the little home.
"There I am! You can see a path here," Izuku chirped as he skipped forward. The grass seemed to bend towards the mage, brightening and blooming as he walked through. A crooked hand reached out to touch the foliage. The scene felt so regal and warm.
The pair approached the humble home. Gray stone made up the walls, cemented with handmade concrete. Windows were decorated with beautiful colors. A maroon roof topped the home, coordinating with the deep red door awaiting their arrival.
Scarred hand lit up in green lightning as the witch waved a simple pattern, unsealing the entrance. The door opened slowly and revealed the contents of the small abode.
For how simple the outside appeared, the inside felt generous. The witch lead them inside and straight into an open kitchen and den space, complete with wooden counters and a cozy patched couch. A small table with two chairs was tucked in the corner, surrounded by potted plants and vines trailing up the dark walls. A small hallway in the back of the home lead to a bathroom and tiny bedroom. Izuku looked natural in the space, while Katsuki had to duck as to not be pressed against the ceiling. Izuku caught sight of the beast blowing air out slowly as he shrunk his form in order to navigate the space easier. Izuku made a mental note to ask more about that tomorrow.
"Are you hungry? I don't keep much but I'm sure I can make soup or something," Izuku went to rummage around his home as though Katsuki was an average guest and not the literal king of Hell.
"Lemme help," the other grunted.
"Oh! Nononono you're my, uh, guest? I can make something, no problem."
The blonde ignored that entirely and began rummaging through the cabinets. The noises coming from the man were becoming more and more angry.
"You have every fucking ingredient on the planet but no fucking vegetables? No meat? I don't even see bones that aren't sun bleached. You have fucking SUCCUBUS TEARS but not BREAD?!" Katsuki got louder and louder as he spoke before whirling to glare at the witch.
Izuku threw his hands up defensively, sending a gust of wind that had Katsuki stumbling backwards. The oblivious witch back pedaled until he was against the wall, murmuring "I'm so sorry! I'm so sorry, please forgive me. My mom really wants me to meet a nice man and graduate and become a good witch and I can't do that if the Lord of Hell eats m-"
"OI, Motor mouth! Chill out. I'm not gonna hurt you. I wouldn't just hurt someone for stupid shit. I also wouldn't just fucking eat you either for the record. The fuck? I'm not evil," the taller man looked to be...pouting? Arms were crossed in front of his incredible pecs, fingers tapping in irritation.
"Oh....is that part of the contract? That makes me feel better," the frightened one peeled himself off of the wall and looked at into blazing eyes. There was a flash of hurt on the fiendish face.
"Katsuki? I'm sorry, what did I say?"
"No no, you're right. It's all part of the contract. Otherwise I'd beat your worthless ass and eat you for dinner. I'll be back." With the brush of his pointed tail, the monster was gone.
Izuku was left with the hollow feeling like he offended his guest. Instead of thinking too much about his faux pas, he took to tidying up the space. It looked like there was a tornado through here. It was picked up when they entered. No matter, weird things like that happened often. The house flooded when he cried sometimes. The stones have been patched from storms, usually the worst storms come when he's angry! It's so annoying. He asked the head master why the weather in his area was so unpredictable, and he just stared at Izuku until he got nervous and left.
As he was wrapping up, there was a huge thump in the kitchen. Izuku turned to see the Lord of Hell had returned with a large pig leg, some ribs, a basket of produce, and a bottle of liquor.
"Katsuki! Where did you even get all that?!" The witch's voice rang like windchimes.
"Don't worry about it, dweeb. Light the stove for me, would ya?"
"Uh...sure?" Izuku hesitantly made his way to the kitchen, basically squishing against Katsuki's huge form to get to the stove. A matchbox was placed to the side. The witch made to grab for it.
"Why matches? You're a fucking witch," Katsuki griped.
"Oh. Yeah, I don't really use fire magic. Sometimes I can spark when I snap. Once I burned a village down. So I just...tend not to use it. I'm pretty good at water, wind, and earth magic, though!"
The lumbering figure sighed, pointing his finger at the wood. A small fire ball left the finger tip and landed in the center of the firewood. The small ember quickly spread into the perfect cooking flame.
"Whoa!!! Katsuki, that was amazing!!!"
"It was literally nothing, nerd. Bare minimum," the demon turned away, fiddling with the procured items. "You gonna help me or what?"
"Oh! Yeah, sure."
"Cut the onion, diced."
The two went on, the demon giving basic instructions to the witch. The witch trying to follow them the best he could. There was a lot of yelling, some smacks on the head, and eventually Izuku was booted from the kitchen for not peeling carrots well enough.
"No wonder you fucked up the ritual. Can't even peel a fuckin carrot..." the beast growled under his breath.
"I'll have you know, my ingredients are perfectly prepared."
The monster sent a deadpan face to the witch before pulling a random box from the shelf. Crimson eyes peered inside, a frown taking place as he slammed the box lid and returned it to the shelf.
"Your ingredients are okay, I guess."
"Told you!" the greenette maturely stuck out his tongue before realizing he was taunting the literal King of the Underworld. His face paled.
"You just remembered who I am, huh?" The infernal one spoke, words dripping in superiority.
"Uh, yeah. Sorry, your highness."
Katsuki faked a gag. "If you ever call me that outside of riding my dick again, I will explode you. It's fine, loser. No need to get a stick up your ass about it."
Izuku choked on his spit, hacking as soon as dick was said. Katsuki seemed to be pleased with the reaction, continuing to prepare the meat with a smirk.
The two ate in peace, sharing small talk here and there. Izuku insisted he take the couch since he was smaller and would fit. Katsuki angrily argued saying he would just shrink himself to fit. Eventually, Katsuki won by throwing Izuku into the room and slamming the door.
The freckled magic user couldn't help but laugh at the action.
"Good night, sir!"
A melodramatic gag was heard from the next room. "Fuck you!"
Somehow, the witch slept absolutely peacefully for once, despite the powerful being lurking in the other room. Izuku never had a sleepover and was just pleased to have company, even if it was the Lord of Hell himself.