Wife (слэш)

Katsuki’s hands are shaking in overstimulation as they both come down to cup his small cock. His toes curl, one hand cupping his balls, the other gripping his cock with his thumb, and his index finger.
Just the way Shouto likes it. The size of Katsuki’s dick is so small. Tiny. Just a little chub, an extra bit of skin, almost. Like a clit. Like he has a sweet little pussy for Shouto to squeeze his dick into. The sensitive skin of a young cunt to stretch around his adult cock. If only. Though - Katsuki’s ass is sweet in that sense.
Katsuki only has to touch himself with two fingers, legs open and spread all the way apart to show Shouto. He’s panting. Two fingers stroking his tiny dick, pink chest rising and falling, brows drawn over glassy, teary red hues with wet cheeks and spit-slicked lips.
His son looks up at him and asks, “Like this, Daddy? I’m touch—touching my pee-pee how you like it. Am I, am I sexy?”