The second generation of Mazda's popular model, the Demio. The platform was shared with the Ford Fiesta, Mazda's parent company at the time, and the engine and platform were completely redesigned. With its straightforward maneuverability and high driving quality, the Demio was highly qualified as a driving technique training machine among the many FWD compact cars, including the previous Demio. The name of the car outside Japan is Mazda 2.

The story is set in Tokyo, where an old school right in between the neighborhoods of Akihabara, Kanda and Jinbocho is in danger of consolidation and closure. Nine girls, centering Honoka Kosaka, have stepped up to defy the imminent danger facing their school. “If we want to protect our beloved school, we need to do what we can? we need to become idols!” Hoping against hope there’s something they can do about this, the girls strive to become famous, spread the word about their school, attract more students, and save the day. Now their “School Idol Project” begins to make their dreams come true! “Make our dreams come true!”

She is a second-year student at Otonokizaka Academy. She is the training coach and lyricist for μ's. She is a dignified, elegant, and gentle girl who has known Honoka and Kotori since childhood. Her family is the head of a Japanese dance school, and she has been practicing etiquette and martial arts since she was a child. She is also a hardworking person who loves to practice and balances her school idol activities with her archery club. She is a modest person by nature, and was initially reluctant to join the school idol club because of her fear of public appearances, but Honoka's enthusiastic solicitation persuaded her to join the school idol group μ's. Her special move is the "Love Arrow Shot," which shoots through the heart.