Work Text:
The scene that unfolds in front of Kirishima stirs various complicated emotions inside him. The first feeling is a searing ache in his chest and something akin to betrayal. The next is fiery jealousy burning in the pits of his stomach, followed with a growing desire to commit violence. Yet strangely underneath those saturated emotions, he felt waves of arousal slowly building.
Yoshino Somei, his beloved person, sat on another man’s lap sharing a passionate kiss in her room. Said man being none other than Torioshi Shouma. A man he always considered a rival for Yoshino’s affections, despite his status as a platonic childhood friend. After coming home from a hard day’s work Kirishima had been excited to give Yoshino the dessert he brought from her favorite store but was quick to freeze in front of her opened room.
The two don’t seem to notice his presence as the kisses quickly grew hotter by the moment. It was only when Shouma’s hand slowly slid inside of Yoshino’s skirt that made her stop in surprise.
“Hey! wait a—” When she opens her eyes she immediately notices Kirishima’s looming figure. Her eyes met his sharp gaze clear with murderous intent.
“Kirishima..” Yoshino looked so innocent. As if she hadn’t been caught smothering herself on another man’s lips just seconds prior. There were many things Kirishima wanted to do at the moment. He thought of tearing Yoshino away from that filthy man’s embrace. Then he thinks of punching the man immediately after, beating him until he’s no longer recognizable and perhaps chop up his organs to sell off in a black market. But he does none of those things. To his own surprise, he lets himself in and shuts the door. He smiles like he usually does, eyes turning into crescent moons as if nothing out of the ordinary happened.
“Ah, Yoshino-chan. This is practically my NTR fantasy brought to life ~ weirdly it’s a lot more unpleasant than i hoped.” Kirishima’s gaze landed on Shouma, who annoyingly kept peppering kisses on the back of Yoshino’s neck. “Though, might I ask what prompted you to do this? Aren’t we growing closer to each other? If you want physical affection i’d been happy to comply—”
“I seduced Yoshino-san and I plan on taking her virginity.” That bastard cut in. He maneuvered Yoshino so that she was now facing Kirishima, still sitting on Shouma’s lap. “How does it feel seeing your girlfriend cheat on another guy? I’m sure somebody as twisted as you loves it, don’t you? Yoshino, how about it? Shouldn’t we continue?” Shouma smiles menacingly.
Kirishima sat himself on the floor in front of them. Oh well, Shouma wasn’t completely wrong. A sick part of himself was secretly enjoying this. Despite the anguish he felt at first, this view of Yoshino enjoying herself being touched by another man was definitely sexy. Kirishima will tolerate it just for today. “Don’t mind me. By all means, continue.”
Yoshino hesitated at first but she eventually gave in to Shouma’s kisses. The kisses were hot, needy. Shouma was touching her everywhere. Groping her clothed breasts, trailing her waist, spreading her legs, giving a nice view of her underwear for Kirishima. Kirishima hums appreciatively. It wasn’t his first time seeing them, he roughly recalls the memory of him pinning Yoshino down at the basement. But he wasn’t in a sick state currently, thus he can fully enjoy every moment of Yoshino squirming as Shouma slowly undresses her. He takes her skirt off, then her top. Something inside Kirishima tells him she’d been planning all this seeing as she wore matching undergarments.
Kirishima hugs his legs, watching intently as Shouma’s finger’s reach lower and lower. His index finger grazing at her clothed pussy. He starts pressing on a particular spot that makes Yoshino moan a little. The sound alone is enough to get his blood rushing south. Her underwear got damp. Fuck. Shouma kisses her neck and teases her nipple with his other hand, having already unclasped her bra. He alternates between fondling her breast and grazing her nipple, along with his index finger still rubbing at her clit through her underwear. “S-Shouma touch it directly, please?” Yoshino whimpers. Shouma was happy to oblige, taking off her underwear and beginning his ministrations.
It would be a lie if Kirishima said he wasn’t enjoying this. He was given a full blown out show of Yoshino getting reduced to a moaning mess. He admires her beautiful body. Her voluptuous breasts, her small waist, her sopping wet cunt, god. He was dying to be in Shouma’s position right now. The bastard kept rubbing her clit, it started to swell. It wasn’t long until Shouma pushed a finger in. It swallowed him good, right down to his knuckle, he made sure Kirishima saw it, spreading Yoshino’s legs even wider with his hand, holding one leg in place. He adds another finger in. Kirishima found it hard to remain in his place.
“Look, Yoshino. He’s hard.” Shouma whispered in her ear.
It was delicious. Tortures. Agonizing. Seeing the love of his life at that cursed man’s mercy, writhing in pleasure, panting heavily as Shouma’s name occasionally spills from her lips. His hard-on was pressing against his dark slacks and incredibly hurt. Kirishima could see the way Shouma’s fingers curl and how that single movement made Yoshino gasp. “Ah… fuck slow down.” Her thighs were shaking now. Toes curling. Kirishina thinks that maybe if he begged enough Yoshino would let him suck them. Shouma kissed Yoshino everywhere. From her shoulder blades moving up to her neck, her jaw, eventually her lips, muffling the moans that seemed to get louder by the minute. Kirishima desperately wanted her to moan his name instead.
“Is it here? Is that where you like it? Tell me Yoshino.” Yoshino was biting her lips now all the while gripping Shouma’s hand that was in her cunt.
“Stop, that’s enough! Something’s gonna come out..”
Soon enough hot white liquid dripped down Shouma’s fingers. Shouma finally releases his fingers and firmly sucks on it.
“Why are you eating that, it’s gross.” Yoshino blushes. A grin spreads across Shouma’s face.
“That felt good right? Wanna feel even better?” The man pressed Yoshino’s hand against his clothed crotch, Kirishima wanted to murder that motherfucker. Shouma quickly unbuckles his pants and pulls out his raging hard cock. That guy was stupidly large, fuck him. A large part of him wants to tackle that guy and rip off that cock right now. Yoshino was still visibly gawking at his size alone.
“How are we gonna do this?”
“Let’s do it like before. We need to put on a show for our guest.”
Shouma maneuvers Yoshino on his lap once again. Kirishima could see the slight panic in her eyes. “You’re gonna be slow right?” It was frustrating seeing as Yoshino really treated as if Kirishima didn’t exist at the moment, despite his eyes glaring daggers. Shouma gently penetrates inside her sopping wet heat. Kirishima could see beads of sweat forming on her forehead. Yoshino eventually bottoms out. She winces in pain, brows furrowing. Shouma doesn’t move as he lets her adjust to his size. Kirishima fisted his hands, nails digging inside his palms until it bleeds. Never in his life had he felt such repressed anger. A fiery feeling on the pit of his stomach. He could only imagine what Yoshino would feel like. Soft, wet and tight. This picture of Yoshino was something he’d only seen in his fantasies.
“You can move now.” Shouma doesn’t waste a second. He lifts Yoshino’s body using the back of her thighs just until it almost reached the tip of his cock then slammed back down, making a hard slap audible in the room. Yoshino had her eyes shut, a loud moan escaped her lips due to the impact. Kirishima could see the shape of Shouma’s cock bulging from the skin of her stomach. God. That should’ve been him. They establish a nice pace. Shouma smoothly transitions from languid and steady movements to harsh, precise thrusts. Fucking her like a dog in heat.
Laying witness to such vulgar love making really made him excited down there. A part of him debated on whipping out his cock to jerk off right there but his pride decided against it. Yoshino’s breasts bounces lightly to each movement it left Kirishima drooling. Yoshino looked so perfect that he could almost cry. He too wanted to feel her raw cunt against his cock. He’d sell his soul for it.
“Ah..S-Shouma nghh-fuck.”
Cum started accumulating from the hilt of Shouma’s cock. Yoshino already came twice. Kirishima thinks she must be so sensitive right now.
“Fuck.. Yoshino can I cum inside you?”
“Yeah, do it.”
Shouma stills for a moment, pausing his thrusts as he orgasms. Releasing hot ropes of liquid inside her. He thrusts a few more times and pulls out his now soft dick. The room was now filled with their heavy pants. Yoshino’s cunt was dripping with cum. Kirishima licks his lips.
“Hey, asshole. C’mere.” Shouma spreads Yoshino’s legs, “Your girlfriend’s all dirty down here. Go lick it clean.”
“W-What? I didn’t agree to that!” Yoshino squirms in protest.
“He just saw another guy fuck his girl’s brains out. He sat there like a good boy resisting the urge to whip his cock out and jack off like the sick fuck he is. I think that deserves an award. Let him eat you out, Yoshino.”
Kirishima was already crawling towards them. “Please let me, Yoshino-chan.” He leaned his head against her thigh, face flushed red and eyes hooded with lust.
Albeit embarrassed, she gives a curt nod. Kirishima kisses his way from her thigh up to her crotch. He licks a fat stripe on her labia, then gives a deep lick inside her entrance. He reaches her clit and presses his tongue against it. Yoshino squirms in pleasure. He laps up the remaining cum that gushes out from her cunt. Nevermind the fact that it’s another man’s semen mixed with her juices. He drinks it like a man in the middle of a desert.
“He looks too happy to be drinking up my cum. Sick fucker.”
Kirishima’s tongue penetrates her entrance. Yoshino screams. She buries her hand on his hair, gripping it hard he’s certain she pulled out a few strands. That just turned him on even more. He wouldn’t mind dying by being choked between her thighs. For Kirishima that would be heaven on earth. Yoshino tasted divine. He wanted to bottle up all her juices and use it to lubricate his dick every time he masturbates. He alternates between sticking his tongue inside and sucking on her clit. Yoshino seems to go crazy everytime so he sucks on it particularly hard.
“That’s enough.” Yoshino forcibly pulls his head away from her crotch. A strand of cum cascaded down his lips.
“Yoshino-chan.. let me fuck you. I promise I can make you feel even better than him.”
Ah.
The night was still young.