I always hate this trope. And if the female character isn't a psycho btch or dead, they can still be an annoying bitch and the fl will somehow still forgive then. (Like this one manhwa I recently read... Fl was almost killed by ml's sister, but ofcccc it's okay.)
like it was expected somewhat here but wow, we really do get rare nice female relatives in these stories. they're either a b*tch or dead lmao