Mitsuki loves singing, but a malignant tumor in her throat has prevented her from pursuing her passion. However, Mitsuki's life turns around when two fun-loving Shinigami appear to grant her a temporary reprieve from her illness--and give her singing career a magical jump-start.

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?