I'm not worried at all about the new girl for some reason, and that's coming from someone who has so much hate for love rivals and worrisome characters. Would the author put her there to set up some drama? I don't think so, I don't think she likes Kozuka, maybe she's just trying to hide the fact that she's also lesbian, I mean, the neighbor is also lesbian, so it won't be surprising if the new girl is also lesbian but trying to hide it. THX for the translation.