From the back cover:
Mitsuki’s popularity as Fullmoon has skyrocketed, but Mitsuki learns that fame carries a harsh price. Hidden among the birthday presents sent to Fullmoon is a mail bomb that explodes in Ms. Oshige’s face! Will the crazed fan be captured, or will Mitsuki have to quit music to save her friends… and herself?
I am very meh about this crazed fan story, even though I quite liked the revelation in the final pages of the volume. It’s possible this story could yield more interesting results later on, but for now, it wasn’t very exciting. Somehow, however, this ended up prompting Mitsuki to decide that she wants to live after all, and to grow determined to be stronger, so I guess it accomplished something besides providing a career obstacle.
In addition to a less than thrilling arc, character motivations or plot flow were not as clear as in previous volumes, and there were several times I had to go back and reread several pages when certain elements seemed to just pop up out of the blue.
I did like the backstory for Izumi, though not as much as Meroko’s. It reminds me strongly of Sohma Yuki from Fruits Basket, and there are parallels to be made between Mitsuki and Tohru, too.