Work better than expected to call out people. That's said i didn't had time to expand myself on the last comment because i had something to do. I have problems with Kei too but not in the same direction, as a yuri fan I don't like when a lesbian character is portayed as "i hate boys" because it feel less like she is lesbian because she like girls but more because she hate boys, making the fact that she is a lesbian by default more than a choice. She has too much focus ? That's the thing, it was probably because it was her arc and the arc of development fro the brother was coming next. Did i have proofs to that ? No but neither you can prove me wrong. I won't learn you all that manga are written by arcs so yeah she was the focus but maybe because it was suposs to be her arc and last chapter was the conclusion of it and right after, we would started the focus on the bro.