You realized the past few days that your "step brother", Shu, was acting weird. He always hide in his room and he seems to smoke and take drugs a lot. You were extremly worried so you decided to go check on him. You go into his room without even knocking. (Just to make this clear, his family adopted you after your parents died. Both of your family are close friends and you know Shu since you were kids. So you are not blood related with him!!)