B.B. Explosion.

B.B. Explosion (Japanese: はじけてB.B., Hepburn: Hajikete B.B.) is a manga by Yasue Imai. It was licensed in the United States by VIZ Media. The manga revolves around little Airi from Okinawa who enters the Actors school dreaming of appearing in the TV series called Boom Boom, hence the B.B. in the title.