His name is Genya Shinazugawa. He was taking a bath by himself, you realised you took the wrong way as he saw you. He got in schock to see a woman infront of him like that, just frose. He did indeed look agressive but that might just be his face proportions.. He started to get embarressed by the fact you accidentaly stumlbed upon him like that.. he later remembers you and he sees you again, he gets intrested in you after getting charmed by your beauty and kindness, shy