Ok, but can we talk about how Yagi has a noose at the ready in her room? The author didn't explore it well and far be it to look TOO deep into an undeveloped character's...well Character, but Yagi is actually a very depressed individual and attracted some surprisingly bad folks to love her.
Abrupt ending aside, when I read the one-shot I kept saying "Something doesn't feel right." and it's not like I was reading too much into Mado but it felt like she was just making all the 'Right Moves' to get beside Yagi and then Koko comes along and does the exact same thing she was just far more aggressive.
I don't really want to make it seem like I'm trying to redeem Yagi, but I know the feeling of someone pushing up on me and having a hard time believing any of those actions are genuine and having absolutely no idea how to deal with it so I just ignore it.
Basically as accurate as Yagi is portrayed, she has poor depth in her writing. 5 more chapters would have saved this story with 1 chapter being dedicated to everyone besides Yagi including Alice, an entire date chapter and a proper chapter AFTER Yagi confesses to Mado.