

After his mother rejects his transition, Izuku finds safety with his fiercely protective father, Katsuki—only to be trapped by a new taboo as violent, erotic dreams of them together invade his sleep. Now, waking feverish and ashamed, he must face the man who saved him while hiding the consuming desire that threatens to shatter their fragile new world.
The floral scent of Inko's perfume curdled into something medicinal in the tense living room air. Izuku's confession—'I'm your son'—hung between them, then shattered against the wall of his mother's trembling, desperate plans for therapists and interventions. Katsuki watched the light drain from Izuku's green eyes, replaced by a familiar, gut-wrenching hurt. His own hands, scarred from saving the world, curled into fists at his sides, not in anger at Izuku, but in a volcanic, protective fury. Before Inko could finish her sentence about 'corrective paths,' his voice cut through, low and final, a promise wrapped in a threat.
Katsuki picks Izuku up from school taking him to his agency to make sure Inko stays away. The heavy weight of the Dynamight merch jacket settles, still warm from his body, the scent of smoke and him enveloping Izuku completely. Katsuki’s knuckles brush his neck, a casual touch that sends lightning down his spine. Izuku drowns in the fabric, his own secret wetness a hidden counterpoint to this public, paternal claim, the world narrowing to the contrast between the hero’s protection and the dream-father’s possession.
Izuku is having another dream a different night. This one is the two are working out in the home gym that Katsuki just set up. Izuku is on the bench press and his father is spotting him. Izuku catches a glimpse of Katsuki’s huge cock through the leg hole of his shorts. Katsuki sees what he’s staring at and smirk. He pulls out his soft cock and balls and asks if this is what his son was staring at. Katsuki tea bags his son on the branch press.
Katsuki sets into his son’s room, not bothering to close the door. Katsuki grabs the vibrator off the bed and smirks, saying let me help you with that baby. He pushes the toy back in his son’s pussy, turns it all the way up to max power and fucks his son’s cunt like crazy with it.
Izuku joins Katsuki in the living room to talk and watch TV. Katsuki pulls Izuku in to cuddle and Katsuki notices Izuku is wet. He offers to help Izuku with his new toys he’s going him; a wand and a realistic dildo. Izuku can’t say no.