Akai Nikkichou is really nice, I like it.
For starters the four of them have nice low notes.
Momochi is amazing of course I just wish she could improve her head voice, it's too weak for someone as skillful as her.
Hirose has so much potential, such a newbie and it shows in her voice but her control is nice, but then I remember the recording for Dosukoi and hmm...but she has time to grow, she'll be one of the best if she keeps this up.
Kana improves so much nothing else needed to be said.
Sakura still has the same problem, I need her to learn more from Ai-chan lol if she improves her high notes like Ai-chan she'll be a force to be reckoned with.