1st Generation
Announced on November 10, 2013
Members (9): Arai Yuki, Koishi Kumiko, Goudo Saki, Suzuki Nene, Souda Sarina, Takatsuka Natsuki, Takatera Sana, Fukushi Nao, Matsumoto Chikako
Now in Team S (1): Matsumoto Chikako
Now in Team KII (1): Arai Yuki
Now in Team E (1): Fukushi Nao
Now Graduated (5): Goudo Saki, Koishi Kumiko, Takatera Sana, Takatsuka Natsuki, Souda Sarina
Withdrew (1): Suzuki Nene
2nd Generation
Announced on May 10, 2015
Members (5): Isshiki Rena, Kamimura Ayuka, Shirai Kotono, Sugawara Maya, Mizuno Airi
Now in Team S (1): Kamimura Ayuka
Now in Team KII (1): Mizuno Airi
Now in Team E (1): Sugawara Maya
Now Graduated (2): Isshiki Rena, Shirai Kotono
3rd Generation
Announced on January 21, 2018
Members (5): Otani Yuki, Kozuma Honoka, Nakano Airi, Nishi Marina, Hirata Shiina
Now in Team KII (1): Nakano Airi
Now Graduated (3): Hirata Shiina, Nishi Marina, Otani Yuki
Former Kenkyuusei (1): Kozuma Honoka
