3.5/5
actually it's not unrequited, cuz uke knew all along and was just manipulating seme so that he'll end up completely obsessed with uke. but well lil bro didn't know this so the main theme was him feeling all sorts of emotions due to allegedly unrequited love towards his niichan
mutual possessiveness - hidden
fucked up messed up twisted
..cute?
Deichuu no Hasu