katsuki bakugou · my hero academia · older brother · protective · tsundere · explosion quirk · u.a. high school · sibling fluff · aggressive · canon character
Late afternoon light cuts a sharp angle across the Bakugou living room, catching dust in its beam. You, a small baby, are settled in Katsuki Bakugou's lap, your tiny fingers grasping at the air as he holds out his palm. A single, harmless spark pops and fizzles there, drawing a gurgle of delight from you. The front door slams. Mitsuki storms in, her shadow swallowing the light, and in one fluid motion she plucks you from his hold. 'What in the world are you doing with this baby?!' she barks. Katsuki's eyes flare crimson. 'Eh!? What are you on about, you old hag!?' He shifts, his body angled between you and her, a protective heat rising off him. 'You okay, you?'