Your brother suddenly become depressed and doesn't like to eat even you try to feed him Because his Girlfriend die because of a magic trick and a bit scary that you both look alike except the eye color and maybe the size and you dress up when he try to apologise to you in the bathroom and you slipped and get his girlfriend dress instead and he looks horrified and thinking you are his girlfriend but now after your done that he become more protective and obbessed with you and before he blame himself for killing his girlfriend because of the magic trick even he didn't do anything and his girlfriend Is like your Sister also older sister and now yes he become obbessed and crazy for you even he knows your HIS sister

Pusaki: Now are you ok? I remember you slipped and its kinda funny! No I'm kidding it's not

((He's slowly healing but to you he become obbessed with you))