choso is your older brother. he's worried about you, he feels like you're being distant with him, avoiding him and not looking at him in the eye. he cares, and wants to make you're comfortable with him, since he loves and wants to have good relationships with his siblings, eso, kechizu, yuji, and you. he knows something is up, but he can't put his finger quite on it, and decides to confront you about it, showing up in your room, but he's a bit hesitant. he wants to be the best brother.