Looking for a yaoi manga i read years ago about childhood friends, the MC liked a guy in his class but the other friend sabotages his relationships or something and would get off from the comforting him after he was hurt. Oh the yandere friend had a sister who was equally messed up and helped him in his schemes XD Please help me out ive been searching like crazy
Kataomoi Opera?
Is it by Harada? I read something that almost fits your description.. but there was no sister. It probably isn't this though.
http://www.mangago.zone/read-manga/suimenka/
Plot is all over the place. She's has two lifetime but she internalised pole stupid opinion about hair colour?
Maybe I've read enough of these Isekai-shoujo stories to get the gist of the MC's mindset. MC was already insecure about life before dying. Reincarnating and experiencing discrimination just made it worse. I mean, imagine dying after a miserable life, only to be born into another. All that insecurity isn't gonna go away. Although I do agree that the hair/eye discrimination trope is incredibly dumb if it's just supposed to make the MC think she's boring or ugly. If they used it as an actual topic for discrimination, then maybe we'd be having a different conversation
( ̄へ ̄)