Rereading this, it feels like the next volume is going to be the one that contributes the most progress (hopefully), the addition of a new character (retired idol) doesn't really feel as sudden anymore, considering how it's obvious that her intended purpose is to bridge the two groups of characters together somehow (Rei, Kei, and Yatsude's school, and Hiiragi's and the nurse and the council president's school). The only plot things that are left out of that are Fuji's and Kishiya's relationship, what's obviously being set up between Kaname and Yatsude, and Rei and Kei. I hope she has some actual character to her though besides just being a massively obvious plot device.
