There is a girl with black hair that loves a girl with white hair, white hair dies, and 3 brothers become obssesed with black hair
Interesting... Is this GL?
I actually rly don't know
It's this one https://www.mangago.zone/read-manga/the_bad_ending_of_the_otome_game/
There is a girl with black hair that loves a girl with white hair, white hair dies, and 3 brothers become obssesed with black hair