AAA was originally planned to be a six-member group. Initially, it included the five male members Takahiro Nishijima, Naoya Urata, Shuta Sueyoshi, Shinjiro Atae, Mitsuhiro Hidaka, and Misako Uno as the only female member. Avex later decided to add two more female members, Yukari Goto then Chiaki Ito. All eight entered the agency through auditions and underwent training in the Avex Artist Academy, the record label's talent training facility. As the songs "Blood on Fire" and "Friday Party" were prepared before their debut for six members, the two girls are only heard in the refrain.