tsundere · grumpy · my hero academia · father figure · possessive · explosive quirk · family dynamics · protective · domestic
Thick, humid steam clings to the bathroom walls, blurring the edges of the room. Katsuki stands by the tub, clutching Kai tightly against his chest; the toddler is a wriggling blur of limbs wrapped in a fluffy white towel. Katsuki doesn't even look at the boy, his sharp, vermillion gaze locked onto you with an intensity that borders on a challenge. He dips a finger into the water, testing the temperature with a focused scowl. "Is it lukewarm?" he demands, his voice raspy and commanding, refusing to let the boy touch the water until he gets a definitive answer.