♡Anime: Welcome to Demon School Iruma-Kun!♡

TW⚠️: Knife play/ blood/light bondage/degradation

Author Note: I'm helplessly in love with this non-binary demon cat idc idc.

***

"Have a great day at school Iruma!" You chirp to Iruma who waves to you while his friends Asmodeus and Clara wait at the gate to walk to school together.

"Chairman you best be leaving too, you have a busy day scheduled," you say while turning to the lanky older demon standing behind you sullying the ground with his tears. Though luckily you had learnt from Opera and already had a bucket stationed to collect the salty water.

Speaking of which it was odd enough that Opera wasn't waiting outside your door to wake you up. Most time they relish jumping you from your sleep and blindsiding you with the responsibilities you have set for the day.

"Yes yes, I know. Are you sure you'll be alright on your own today?" Sullivan asks as your face quickly scrunches up in confusion.

"What do you mean on my own?" You ask as Sullivan promptly makes his way out of the mansion with an annoyingly gleeful expression. You can't help but feel uneasy whenever the chairman is overly happy.

"Oh did I forget to mention it? Opera is in their evil cycle, they locked themself in their room until it wears off since they can be pretty...intense. Good luck!" Sullivan says before running off as you reach out to helplessly attempt to stop him.

Opera's in their evil cycle? You never thought you'd hear those words considering how composed they are most of the time regardless of being provoked constantly. The other times they're gladly indulging in some mischief teasing either yourself or Kalego to relieve stress.

You can't help but wonder what tipped the balance for them. However, your bigger concern is how you're going to pull off all the things Opera does without their help or guidance. It's only your third week working under the chairman, and Opera hasn't praised you once for your hard work.

Every time you think you're finally one step ahead of them you suddenly find yourself three steps behind. Though that could be due to the chairman's unpredictability, no matter what Opera seems to be ready to handle any challenge with poise.

You admire them greatly for that quality.

***

You're not sure how many hours have passed since you began tackling your morning chores, but you feel fatigue take over your body as you lean against a nearby wall for support.

You hear loud groaning nearby making you expressly aware of the fact that Opera's room is in this hallway. You've never seen the inside of it before, but you find yourself inching closer to the large red double doors where the groans get louder.

The malicious part of you is curious as to what the ever-smug and opinionated Opera is like during their evil cycle. Though a smaller part of you is concerned with how they're handling it. However, the way that the groans switch to moans gives your brain an idea of one common method of stress relief.

You bite down on your tongue and lean your cat-like ears against the door. As much as Opera would scold you, you still loved the sound of their voice. Right now the gasps and moans that escape their lips make you cover your mouth to hold back a needy whimper.

You want to be the one making them make those sounds, or rather you want them to make you make those noises as well. You know your primary focus should be on Iruma and the chairman, but whenever Opera is around your resolve gets fuzzy and you can't help but lust for them.

Before you could decide whether to knock on the door or not, the doors abruptly slam open and you feel an arm grab you and yank you inside by your tail. The door is swiftly closed behind you and you find your back resting on it as your eyes adjust to the darkness of the room.

"Well if it isn't a little peeping tom. Naughty little monster got too curious for her own good," Opera teases as you feel your cheeks burn with blush. Opera's hand remains on the wall next to your head, the line of their arm guides your gaze to their face, more accurately their large red eyes teeming with mischief.

"I'm sorry, I didn't mean to bother you. The chairman told me about your evil cycle so I just wanted to know if there was anything I could do to help," you say as Opera's left hand seems to mindlessly trail across your lips. You can tell that the gears are turning in their twisted mind.

Opera's breathing noticeably picks up and you find yourself increasingly aware of their appearance. Unlike their usual neatly situated uniform, Opera now only wears a white button-up shirt and black boxers. Only, the button-up isn't buttoned at all and gives you a devilishly delectable view of Opera's toned abdomen.

Their hair is no longer tied back into a neat braid, instead, the red locks flow messily around them only enhancing the unhinged aura led by their current mental state.

"Where is the chairman now?" Opera asks while their hands continue to play with your face.

"He left a while ago,"

"And Iruma?"

"He's set off for school as usual," you reply as Opera's eyes flash with excitement as they lean in closer, stopping just inches away from your quivering lips.

"Ah, so it's just us then, good," Opera says while licking their lips.

"As you most likely heard I already tried to deal with this desire of mine on my own, but after the first five times, I grew tired of it. You wanted to help me, right little monster?" Opera asks as you hesitantly nod your head.

"Of course, you're always helping me so I'd be more than happy to assist you in any way I can," you declare as Opera chuckles sinisterly making a chill run down your spine.

"Excellent answer. Then be an obedient slut and let me use you freely," Opera coos quickly before thrusting their lips upon yours making your eyes widen. Opera places a firm hand behind your neck, you feel yourself melting into the kiss the deeper Opera's tongue explores your mouth desperately.

You feel your legs beginning to turn to jelly from your earlier fatigue and overflow of lust for Opera. Their hands are soft against the back of your neck, though the gentleness doesn't last long before their hands slide up to your head and grab a fistful of your hair while still not shying away from your increasingly sloppy kiss.

You hear yourself let out a slight gasp as you stick out your tongue and feel as Opera sucks on it needily. The yearning for more radiates off of them as you let out breathy open-mouthed moans at Opera's actions. You feel something sharp and cold being pressed against your thigh and open your eyes to see Opera watching your expression breathlessly.

"Can I cut you Y/N? Please? Your skin is just so soft and unmarked I can't help but want to mark you myself," Opera says while panting, they're practically drooling at the thought of tearing your skin ever so slightly open.

"Of course Opera, anything for you," you reply as Opera briskly scoops you up and tosses you onto their bed. You bounce a little before feeling Opera hover over you while lightly biting and kissing your body on their way down to your inner thighs.

"Don't worry little monster, just a tiny cut. I'll be gentle," Opera tries to reassure you, though the way their fangs unsheath themselves and their claws grow gives you the impression that it'll be hard to hold back if they even bother to.

Opera glides the smooth side of the knife's blade against your inner thigh, the cool silver makes you bite down on your lip as you savour the slight pleasure before the tiny bit of pain. Your mouth remains agape as Opera gently presses the tip of the knife into your flesh, but removes it before breaking through.

"Opera...please," you beg lightly making Opera's ears twitch as they instead run the narrow spine of the blade against your thigh. You try not to squirm as you feel your nethers grow moist from the excitement and anticipation.

"That's a good little monster, be needy for me. Give me more, more of that sweet lust of yours," Opera says as they finally run the sharp edge of the blade against your inner thigh. You let out a tiny hiss at the cut, you're surprised that the cut wasn't as deep as you were expecting considering Opera's body language.

You feel blood begin to trickle down your leg but Opera giggles happily as they lean down and run their tongue along your slowly bleeding cut. You let out a soft moan as Opera teasingly glides their tongue along the cut. Their red eyes glance up at you making your breathing hitch.

"Suprised? What an adorable expression, do you like how that feels?" Opera asks as you bite down on your lip and nod. Opera pulls away and licks the blade as they shoot you another mischievous glance.

"Shall I mark you more?" Opera asks as you nod mutely, they don't hesitate to oblige to your command. This time the knife gently slices slightly further up your thigh and then on the other side, the tiny cuts accumulate and grow closer to your soaked cunt. You can't hold back your moans as Opera's tongue eagerly seeps up any blood that spills from your cuts.

"Who would've thought that even without your evil cycle you're into such things as being cut? You're quite naughty Y/N," Opera says as they stop just below your entrance. You hold back a pout as Opera leans away from you instead of continuing further upwards, though judging by the shit-eating grin on their face they're more than aware that you're left hot and bothered.

"Want a taste?" Opera asks as he brings the sharp end of the blade up to his neck making your eyes widen. You know that a shallow cut to the neck wouldn't affect a demon as strong as Opera, you're more concerned about the side effects of you licking their blood.

Your bloodline magic is blood manipulation, you can manipulate your own blood and use it to attack while licking the blood of others gives you a glimpse into their memories and allows you to control them if you were so pleased.

"I-I really shouldn't," you stutter out as Opera's ears move downwards in disappointment.

"Aww come on, I don't mind. I don't have anything I want to hide from you Y/N," Opera informs you as you bite down on your lip.

"Of course, I should've expected you'd know about my bloodline ability before suggesting for the chairman to allow me to work here," you say as Opera nods and leans closer to your face, their expression is gravely serious.

"Your ability is powerful and adaptable, you just need to stop shying away from it and use it shamelessly. Therefore, I brought you here because you intrigued me and I want to see just how strong you can get," Opera explains further as you begin to blush.

"Opera..." you start as Opera places a finger on your lips.

"Shh, let's continue to play shall we?" Opera says as they lean away before slashing the blade against their neck with zero hesitation. Opera's smile becomes more deranged as they open their hands welcoming you to lick the wound that draws more blood than any of your cuts.

You gulp and sit up on your knees before placing your hands on Opera's shoulder for support as you lean your mouth towards the cut and lick Opera's blood. You're no vampire, but something about Opera's blood makes you lose self-control and messily begin to suck and bite their neck.

You hear Opera let out some soft moans of pleasure as a few of Opera's memories fly past your eyes. You abruptly pull away from them with eyes brimming with lust for the demon in front of you.

"Hmm? Fallen for me even more?" Opera asks playfully as you nod making Opera's ears perk up as if surprised by your answer.

"You're truly an outstanding demon Opera," you say wholeheartedly as Opera stares down at you curiously as you see their tail begin to wag ferociously.

"Y-you really think so?" Opera asks as you nod.

"Of course, there's not one thing that I've seen you try that you're not incredible at!" You exclaim as Opera's ears continue to twitch gleefully. They look away from your eyes for a moment as they chuckle and brush their messy hair back.

"Ahh, such praise from my new protege. Shall I show you what else I'm good at then?" Opera asks as you nod eagerly before watching as Opera dismounts the bed before returning with something in their hands.

"Be a good girl and hold out your hands for me alright?" Opera instructs as you feel yourself hesitate at the sight of the red ropes. You're excited at where this encounter is leading, but are more than acutely aware of how things could turn out of the chairman were to somehow find you tied up in Opera's room...

"If master Sullivan were to come home early and I'm tied up..."

"Oh, it doesn't matter, once I'm done with you you'll be in no condition to work regardless," Opera whispers in your ear as you feel the ropes being tied around your wrist. Opera leans you back down onto the bed and lifts your bound hands above your head.

You feel the rope latch onto something that keeps your hands trapped above you. You watch as Opera presents you with a blindfold and a sinister smile. Opera's always been the playful type, but you can't help but feel as if they're eager to try multiple different kinks with you all at once.

You've seen bits and pieces of how experienced Opera is when it comes to magic training and fights, though in the romance department you were left with surprisingly little information.

"Got a safe word?" Opera asks as you can't help but feel your lips curl into a smile at their clear enjoyment and anticipation. You said you'd be willing to do anything to help Opera out, though your own selfish desires are being fulfilled as well.

"Fluffy," you respond as Opera nods before sliding the blindfold over your eyes. With your eyes and hands bound you feel your senses grow heightened as Opera teasingly beings to trail their soft fingers against your neck. You feel Opera's hands glide curiously across your body while slowly unbuttoning your top.

"Hey Y/N...can I let you in on a little secret?" you feel Opera's breath tickle your ear as a chill runs down your spine at the unexpected question. You nod as you feel the air come into contact with your bare chest. You hear Opera let out a sound of apparent awe and wish desperately that you could see them.

"I've never done this before," Opera confesses as you try to think of something reassuring to say, however, your train of thought gets derailed as Opera effortlessly slides off your bottoms leaving you naked before them. You hear Opera let out a chuckle that makes you grow a bit embarrassed.

"Don't worry though, I know what to do to make this enjoyable for both of us," Opera finishes confidently as you feel Opera's mouth make contact with your neck. The sensation feels more intense than it had previously, your hands twitching wanting to grab something as Opera fondles your breasts roughly while leaving hickies along your collarbone and neck.

Your voice starts to come out again and you let out a shocked squeak as Opera's hand grazes your slit. You begin to squirm around lightly as Opera's fingers circle your clit while their mouth still latches hungrily onto your neck until it feels raw.

"Wow, look how shamelessly wet you are for me Y/N," Opera says in a teasing tone as you bite down on your inner lip after feeling Opera slide a finger past your walls. You let out a single curse making Opera chuckle and bite your cheek.

"Ah, that feels good huh? If one made you curse, how many more fingers do I have to add to make you scream out for me?" Opera asks as you go to retaliate but feel a second finger slide inside of your messy cunt. You can't fight against the pleasure as Opera finger fucks you while mixing in different angles and twisting motions.

"Opera I'm gonna cum, don't stop!" you yell out as your back arches and tears of pleasure slide down your cheeks as you cum on Opera's fingers. Opera waits until your body has relaxed again before adding another finger and speeding up their thrusts.

"More, cum for me more Y/N," Opera demands in a needy voice that makes you whimper. Not long after you feel yourself release again to Opera's delight, though this time they don't slow down before sliding the rest of their fingers into your pussy.

You let out a sharp gasp as you yank on whatever is holding your bound hands back. More tears slide down your cheeks and you feel lips kiss them softly as you adjust to Opera's fist.

"Fuck I feel so full," you mumble out as Opera continues to kiss your cheeks while twisting their fist in and out of you slowly. You let out a string of slow curses, first because of the initial pain and discomfort, but then because it feels better than you expected.

"Opera give more, please," you plead as Opera nibbles your ear.

"You said you felt full and now you want more? Such a needy slut for me," Opera says in a demeaning tone that only makes you crave them more. Your hands once again pull on your restraints, you want to feel them, to yank on their hair as you cum again and again.

"Hmm? Desperate to touch me huh?" Opera notes as you nod rapidly.

"Yes, I want to touch you Opera. Please," you beg as Opera continues fisting you making your words get jumbled up with your curses.

"Cum for me again and I'll consider it," Opera instructs as you nod and feel their free hand grab your cheeks roughly before sliding a finger into your mouth. You desperately suck on Opera's finger as your climax builds once more, though this time it feels different.

"Ahh Opera I-I'm..."