@liquidsword She likes Koyuki and wants to get rid of the dude. We still don't know who this tiny annoying brat is and by the pace of the author, it will be a while.
@Chet31 I mean, I figured that much out. It’s just that she’s pointless as a character, y’know, but I guess love rivals are always like that. The pace is already extremely slow like you said, but this just makes it even worse.
@liquidsword she's not even a love rival, unless she's romantically interested in Koyuki, which doesn't seem to be the case. She's more like your girl's possessive best friend who keeps butting in all your couple activities.