Kinky

Fortunately, he doesn't have to think about that because he'll make sure this relationship lasts for the rest of their lives. And even beyond that, because Katsuki will follow Izuku even after death.

The pro hero lies next to his cute nerd, he stares at his peaceful expression knowing the besotted smile is back on his face. He moves closer, gently pressing his fingertips against the scar on Izuku's cheek, before caressing his freckles with care, almost in awe.

His cute face has always been almost mesmerizing to him. It's one of the reasons why, when Katsuki was just a stupid brat, he couldn't come up with one of his usual nicknames for people; everything about Izuku's appearance pleased him.

Katsuki's lips press softly against's the teachers chin, because he can't help himself, his hunger for touch awakens every time he's near his fiance.

When the blond's lips make contact with Izuku's cheek, the teacher finally blinks his pretty eyes open.

"Welcome home, Kacchan," he beams groggily, chuckling when the pro hero pulls him closer and slides a hand under the black shirt the nerd's wearing (Katsuki's shirt).

When his fingers reach Izuku's thick ass, Katsuki's hunger turns into something even more wild.

"A thong, Izuku?" He questions, he meant it to sound playful, but his voice is too deep and raspy for that; his need is too obvious.

"It was a surprise," the nerd bites his bottom lip, a bit embarrassed.

The expression makes Katsuki growl with want; his fingers immediately find the nerd's hole and he starts fucking the sweet nerd with them. One turns into two and then three when they finally reach the spot, which prompts Izuku to move his hips and let out a delicious whine that the blond kisses away.

He increases the pace, but he purposely avoids the spot, making Izuku plead, and even sob.

"You're being mean, Kacchan!" His precious nerd moans, trying to scold him, tears sliding down his face, lips curling down in a pout because he can't get what he wants.

He kisses those tears ways, smirking smugly while watching as Izuku's cheeks turn pink as his lips part to let out another moan. However, the teacher decides to take revenge by rubbing himself against Katsuki's firm body.

The pro hero's grin only turns wider before giving Izuku a devouring kiss. There's no way Katsuki will ever let anyone else have this; he'll do anything to keep Izuku now that he has him.

He's so glad the wedding is only two months away, but, if he's being honest, he'd marry Izuku that same night, just to make him legally his as soon as possible.

Katsuki pulls four fingers out of his nerd, and chuckles when Izuku frowns and whines in protest. Immediately, he grabs that tiny waist and turns him around to place him on his back over the mattress.

He wants to kiss his wet cheeks and look into his eyes while he makes love to him.

"Kacchan, please..."

"It's okay, baby," Katsuki promises in a deep voice, as he finally gets rid of his own pants. He's so hard already, and it doesn't help that Izuku's eyes open wide when he notices it. "I got you."

A bit desperate, Katsuki tears the thong as he puts Izuku legs over his shoulders to bend him to his liking. He grabs the lube in the bedside table and prepares himself before sliding his cock all the way inside Izuku.

The teacher whines and moans, eyes rolling to the back of his head for a second before staring right into Katsuki's red ones.

"You're MINE, Izuku."

The nerd moans a long YES! in response as Katsuki starts pounding; he wants to go deeper, to be buried inside Izuku so no one can tear them apart ever again.

His teeth sink into Izuku's shoulders and neck, as the mattress starts making noise under them; Katsuki smiles before pressing their mouths together and shoving his tongue inside his fiance.

When he feels nails scratching his back, he realizes his cock is finally hitting that sweet spot inside Izuku again.

The pro hero bends him even more, feeling like he won at life knowing no one else will have the privilege of watching this side of Izuku.

Instinctively, he increases his pace; Katsuki's possessive side overwhelming him with need. Izuku screams his name once, and the blond starts slamming into him, wanting to leave a mark inside.

"More, Kacchan!"

Izuku tries to touch himself, but Katsuki grabs his hands and presses them against the mattress, right over his head. The teacher eyes fill with pretty tears as the primal need for release overwhelms him.

Katsuki pushes himself deeper, dragging another scream of pleasure from Izuku's sore throat before gently kissing him as the pro hero increases his pace. Izuku whines, prompting the pro hero to groan deep in response as they both finally come. Katsuki collapses over his nerd as he fills him with his cum and whispers how beautiful Izuku looked the whole time.

He keeps stroking Izuku's skin, and presses kisses all over his body while he cleans them both; he takes Izuku's shirt off, replaces with another one of his, and gently helps him put soft panties on, ones Katsuki bought for him the previous week.

The nerd falls asleep first, right in Katsuki's arms. The pro hero stares at him, admiring the marks he let all over Izuku's body, before finally pulling him closer and closing his eyes as he wraps his possessive arms around his fiance's tiny waist.

"You will always be mine, Izuku." He purrs before falling asleep.

***