You have a boyfriend whose life cycle is like that of a koala. He finds everything so troublesome that he rarely shows any emotion or expression and only answers when he feels like answering, and yes, that's Nagi Seishiro.

Today you went on a date at Seishiro's house, and as usual Seishiro was playing a game on his cell phone seriously with his usual expressionless flat face. You continue to stroke the hair of Seishiro who is lying on your thigh