A Japanese TV drama starring a full Hello! Project cast. The drama also featured Sakurada Dori, and former Hello! Project members Iida Kaori, Yasuda Kei, Ishikawa Rika, Kikkawa Yuu and Saho Akari. A mathematics genius girl Machida Nina (Tanaka Reina) starts in a new school and attempts to find her elder sister who vanished from said school one year ago. The story, developed with the cooperation of the International Mathematical Olympiad in Japan, set at a specialized math school, where Tanaka Reina and Michishige Sayumi both take on the roles of “Suugaku Joshi” (“math girls”). Naturally, the show incorporates various mathematical functions and formulas into the story and dialogue.
石川梨華 (Ishikawa Rika) is a Japanese singer and talent signed under J.P ROOM. She is best known as a former idol under Hello! Project as a 4th generation member of Morning Musume. and the leader of the former group v-u-den.