@onionskins havent read the web novels but from what has been shown so far everyone had an acquaintance to friend level relationship with mc. glasses screwed the mc and then told everyone she went home because she felt useless
@Alice_is_lost that isn't even what's happening, she isn't a bad influence. She hasn't tried to get her friends to be Masochist. She just hangs out with them during school and is a Masochist with her girl afterschool this has zero effect on yu or herself. Honestly her logic makes no sense...
@saintnero from what we've seen yes that seems to be the case. However we don't know for sure why she dated the guy but it seems like it was either to help or hurt kaoru in some way