[NSFW] FIC - "we could make this a daily affirmation"

BKDK | post-canon | married husbands | explicit sexual content

I literally just wanted to write mirror sex.

==

WE COULD MAKE THIS A DAILY AFFIRMATION

Izuku, being the most selfless and yet self-deprecating person Katsuki has ever known, has a tendency to put himself down about his scarred and “unattractive” body, and Katsuki is absolutely fed up with it. So the next time they’re fucking, without a word, Katsuki just sweeps him into a bridal carry and stomps into their master bath. 

Izuku has no idea what’s happening, but he does feel the need to point out his dripping cock. “Kacchan, I haven’t finished yet. And neither have you?”

But Katsuki ignores him, just sets him on his feet, bends him over the sizable sink and shoves back into him. Izuku screams, hands gripping hard on the counter, toes finding purchase on the floor tiles so he can push back to meet Katsuki’s thrusts. But his eyes are closed, head down, and Katsuki isn’t having it.

So he grips a fistful of green curls and yanks his head up. Moaning, Izuku’s back arches beautifully, but the little fucker with his freckled cheeks flushed and eyes half lidded looks only at Katsuki’s reflection.

Katsuki yanks harder until Izuku is forced to release his grip on the counter, instead reaching back to dig his nails into Katsuki’s flexing thighs. He’s almost upright now, his back pressed to Katsuki’s chest. The hand in his hair moves to his throat, and Katsuki growls in satisfaction when Izuku’s gaze finally shifts to his exposed body in the mirror.

With one hand pressing bruises into Izuku’s hip and the other wrapped loosely around his neck, Katsuki increases his pace, fucking fast and hard. Every time Izuku tries to close his eyes, Katsuki’s fingers tighten around his throat until his lashes flutter open again. Until he’s forced to watch as his stomach muscles tense against Katsuki’s unforgiving pace, as a red flush spreads across his torso, as his pecs jiggle and bounce, nipples hard.

With one foot, Katsuki snags the stool and slides it closer. Then he hauls up Izuku’s leg to prop his foot on the stool, opening up even more of him to their gazes.

Izuku bites hard on his bottom lip when Katsuki mutters into his ear, “Look at yourself. You’re so fucking gorgeous. So powerful. Love it when you wrap these legs around me. You could suffocate me between those goddamn thighs, and I’d fucking thank you.”

“Kacch—”

“And this ass,” —he presses a finger to Izuku’s stretched hole, pushing it in alongside his cock so that Izuku gasps and bucks into him— “This ass deserves to be worshiped. Deserves to be eaten every day. Licked inside until you cry. Fuck you until you forget your own name. This ass should always be filled, stretched wide so that you’re always ready to take my cock.”

“Please—”

“I’m not done,” Katsuki says and pinches his nipples as punishment for interrupting. Izuku whimpers, eyes glazed but still aware, curls sticking wetly to his forehead. “You’re incredible. Every part of you.” He traces faded scars over Izuku’s hips, ribs, the left side of his chest. “These are so damn sexy. They show how strong you are. How many battles you’ve survived, how no one else measures up. Do you even know what you do to people? To your sidekicks? To your fans? You walk into a room and everyone pays attention.”

Izuku, the shitty nerd, tries to shake his head, but Katsuki just squeezes gently again in warning.

“You don’t think so? Ask that Half-and-Half bastard. He sees it, too. The way everyone’s eyes follow you. The way they hunger for you, bunch of fucking extras imagining how you look on your knees with a cock stuffed between those pretty pink lips. Makes me wanna bend you over your desk and fuck you in front of all of them so they know you’re mine.”

Izuku’s breaths begin to hitch, a whine rising in his throat.

“Do you see it?” Katsuki hisses. Sweat stings his eyes, slicks their bodies, amplifies the wet slap of skin as he pistons into Izuku’s pliant body. “Do you see how fucking perfect you are?”

“Kacchan!”

“Answer me, Izu,” he growls directly into his ear.

“Yes, yes,” he pants. His eyes are just slivers of green beneath exhausted lids, but Katsuki can tell he’s still looking at his reflection, at his heaving chest, his straining muscles, his thighs parted obscenely, his crooked fingers wrapped around his weeping cock.

“I love you so damned much,” Katsuki says, and then covers Izuku’s hand with his own to help jerk him off as his own orgasm crests within him.

Afterward—after a long shower where Katsuki lovingly washes his husband’s body, caressing soap over trembling muscles and bruised hips, sliding fingers into his loosened hole dripping with cum; after Katsuki gently rubs his finger pads against Izuku’s scalp as he washes his hair; after gently kissing his forehead, his cheeks, the tip of his nose, the curve of a strong shoulder—they lie wrapped around each other in their bed, tired and sated, and Katsuki watches in the faint streetlight through the window as Izuku sleeps, mouth curled into the barest of smiles.

He isn’t entirely sure he got through to his nerd, but he’ll be happy to give him as many demonstrations as necessary until it sinks in how absolutely perfect he is.

~fin