AKB48

AKB48 is an all-Japanese theater/idol group produced by Yasushi Akimoto. Unlike other idol groups in Japan, AKB48 is theater-based and have their own theater in Akihabara (a district in Tokyo) where they perform once every weekday, and more than once on both Saturday and Sunday. The theater is set up on the 8th floor of Don Quijote. Some of the title songs released as a single have been made a tie-in song for a television show or a television advertisement. The name derives from a shortened, Romanized representation of 'Akihabara'. AKB48 currently holds the Guinness World Records for being the "Pop group with the most amount of members".

AKB48 is divided into three teams: Team A, Team K and Team B. Currently, there are 16 members in Team A, 16 members in Team K, and 16 members in Team B, getting to the total of 48 members in AKB48. Minami Takahashi is the captain of Team A and Yuki Kashiwagi is the captain of Team B.

Three of their members have appeared in Kamen Rider W. Tomomi Kasai of Team B and Tomomi Itano play Queen & Elizabeth which is also a subunit of the group. Reina Fujie of Team K played a minor role in Kamen Rider W's Hyper Battle.