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It always starts like this, Izuku on his day off, running a few errands around the house, feeling a little too hot, a bit itchy and irritable. Then there are three firm knocks at the door.
He always appears to be in shock, as if he didn't know who it would be when he answered the door.
It's always Katsuki, standing a little taller than him nowadays. Composed, relaxed, but with a determined expression. He never says a word, but Izuku knows why he's here, why he always comes, strangely on time, and with a look in his eye that assures Izuku that he isn't leaving until he does what he's here to do.
To “help” Izuku, as Katsuki calls it.
.
Lately it has been more than just handjobs. He sits cradled between Katsuki, the bigger body as a strong support against his own, as he melts from the heat of arousal as the blonde strokes him. All the while, Katsuki is gentle. He has noticed that he likes to take his time, hand gliding up and down Izuku’s penis, easily too, with the pre cum that Midoriya produces. Sometimes he stops to run his fingers around the head of Izuku's cock to follow that line down the middle and ending at the underside. It is a little too much pressure for Izuku to take.
“O-Okay kaachan, okay!!” He grabs at Katsuki's arm in weak protest but damn it if it doesn't feel so good. How does it feel this good? How is Katsuki so adept at this?
“Are you going to cum?” it's a gentle whisper. A coaxing.
“I…y-yeah if you keep …”
“But you don't want me to stop, right?” he says so matter-of-factly. No usual cockiness or arrogance behind his words.
And yet, Izuku doesn't stand a chance. He screams high pitched, cumming harder than he did the last time and the time before that, with Katsuki stroking him steadily through it, whispering affirmations of “its alright”, “needed that didn't you”.
In his post orgasm daze, he feels Katsuki rubbing him down with a wash cloth before putting him in clean clothes, and he thinks to himself; he will continue to have orgasms that always succeed the last one at the rate that his childhood friend is going.
.
When it's over Katsuki doesn't leave until Izuku has been tucked in and is well asleep, or at least getting there. There's always a bit of a tug and pull near the end with Izuku drowsily assuring him that he doesn't have to come over and help him out with this all the time. Katsuki ignores him anyway.
“I'll see you again soon nerd” closing the door as Izuku thinks to himself sleepily “You…don..even know..th’date…”
It is loud enough for Katsuki to hear, and he chuckles at the absurdity.
He didn't have to know the date. They were synced, rut to heat. But he'd never tell Izuku that, will take it to his grave.