Many Happy Returns (слэш)

“-My birthday’s coming up.” Izuku whispers softly.
A blink. A quick exchange of glances.
“...And-?” Hitoshi asks, growing more and more curious by the breath.
“And…I wanna, well, try something.” Izuku finally answers, raising his eyes and bravely looking from face to face. “-And I might not be that good at it, but-”
“Izuku.” Hitoshi addresses him coolly. “You don’t have to explain, love.”
A wide-eyed gape upward.
“I- I don’t?” He asks, eyes flicking to him- to Katsuki and back again-
-And to his credit, Katsuki looks equally as sure; leaned on his hand with a confidence that’s almost annoying- that oozes satisfaction.
“Nah.” He assures, looking at Hitoshi; the obvious acceptance plastered all over his face. “We’re game, baby.”
 
“So-," Hitoshi begins, not bothering to temper the predatory way his mouth curls.
"-What did you have in mind-?”
 
Can be read as a standalone one-shot, but best read as a part of my Wall series!