the album features two solos: "ai no honō", performed by reina tanaka, and "denwa de ne", performed by ai takahashi. while these are the only solos, other members are allocated main vocals on some songs: sayumi michishige on "fantasy ga hajimaru", risa niigaki on "onna gokoro to nan to yara", and eri kamei on "itoshiku kurushii kono yoru ni". similarly to the group's previous album, "10 my me", the eighth generation, aika mitsui, junjun and linlin are heavily featured on the same track: track 7, "sungoi my birthday".