Demon Kacchan just wants to make deals and mess with people, but Deku, his human partner, keeps summoning him home to fuck. Kacchan has a man by the throat when he feels the intense, familiar pull of a new summoning. It makes his eyes roll back. He releases the would-be victim.

He watches the man gulp for air, bored, and waits for the “please spare my life” speech.

“P-Please, I’ll do anything! Don’t-“

Called it.

“Shut up, extra. It’s your lucky day.” He growls. “Don’t summon me again, especially for something as dumb as revenge. Be fucking original.”

He teleports to the summoner, slightly annoyed. His partner knows that he’s working. It’s so hard to ignore him.

The demon can hear loud moans coming from the bedroom. It sounds like Deku has started without him. He has a high sex drive for a human.

Kacchan isn’t complaining.

He was warned to never get attached to a human. He used to scoff at the very idea.

What kind of pitiful excuse for a demon would get involved with a human?

Joke’s on him since he fell hard for Deku, his pretty green eyes and smile. Deku had summoned him by accident for a dare.

His so-called friends had printed some ancient scripture from online. They instructed him to read it out loud in his bathroom, with the lights off, alone.

The poor human screamed his head off when he saw Kacchan’s glowing eyes in the mirror. He still likes to tease Deku for it.

Deku didn’t beg for his life like the others. He started mumbling apologies.

The demon was shocked when he admitted that he summoned him on a whim. Kacchan should’ve killed him right on the spot for wasting his time. Instead, he spared him. Deku summoned him again the next day.

The rest was history.

“Deku! What did I tell you about summoning me while I’m working-“

Katsuki trails off. His pretty human is on his back, his legs spread wide, as he fucks himself with a fat knotted dildo.

“I-I’m sorry. Need you, Kacchan.” He mumbles, teary-eyed. “Please.”

Kacchan strips and climbs on top of him. He shushes his human, then kisses him deeply.

He bats Deku’s hand away and pulls the toy out. The human gasps from the emptiness.

“Can’t get off with this shitty toy anymore since you’ve had my cock in you, hm?”

The demon lowly laughs.

“Don’t cry. I’ll give you what you need.”

Kacchan flips him onto his stomach and kneads his plump ass. He slaps it, watching the flesh jiggle.

The human whines when he spreads his cheeks and sticks his tongue into him. Deku’s a sobbing mess. He desperately humps the mattress.

Deku begs the demon to fuck him.

The demon lines the tip with his sloppy hole and pushes the blunt head in. Deku grabs at the sheets, babbling, as Kacchan fucks him at a fast, inhuman pace.

“Look at you. Begging a demon to fuck you. Do you like being my human slut, huh, Deku?”

Deku nods. “Yes! I love it, Kacchan!”

With each trust, Kacchan’s cock feels like it’s growing inside of him. They both moan. Deku can feel his knot slapping against his ass.

The human cums all over the sheets, untouched. He whimpers when Kacchan doesn’t stop pounding into him.

The demon reaches around and grasps his oversensitive cock. He strokes it as he fucks Deku through his orgasm. The human whines and tries to wriggle away.

Kacchan digs his fingers into his hips, keeping him in place.

“That’s it. Take it. Show me what a good boy you are, Deku.”

Deku groans and lets him use his body.

“Fuck, thrusting into you feels so good. Gonna pump you with my cum and knot you.”

The demon bites his shoulder, then shoves his knot in, filling him with his load. Deku groans. He feels so full, his stomach bulging from all of the cum.

Katsuki rubs a warm protective hand over his belly and leans down to kiss him. He pulls his cute human closer, cuddling him.

“Fucking hell, Deku.” He sighs. “You’ve got to stop summoning me home to fuck you when I’m working. I’ve got deals to make.”

Deku pouts adorably at him.

“I can’t help that I’m horny and miss you. You could just ignore me, Kacchan.”

“Do you know how hard you are to ignore? Let’s go shower.” He sighs.

“Don’t you have to get back to work?”

The demon grins. “My job for the rest of the day is to fuck you until you beg me to stop.”

TBC? Not me starting another WIP. I love your QRTs so feel free. If you enjoyed this thread, please consider leaving a tip for more. ♡ https://ko-fi.com/spicymacaron