Toyota's first-generation Celica (A20/30) was born in 1970 under the influence of the first-generation Ford Mustang, a famous car that swept North America. Since then, it has been enthusiastically supported by young people as a full-fledged sports coupe model that combines practicality and functionality. Participated in the WRC from the first generation Celica to the sixth generation Celica, the 4th generation T160 won the first WRC driver's title for a Japanese car, and the 5th generation T180 won the double title of the WRC manufacturer and the driver's title. Over the years, this model has developed a very strong relationship with the rally department. However, with the model change of the 7th generation Celica, Toyota changed its policy and abolished the "GT-FOUR", which was the base model of the WRC competition vehicle. Abandoned 4WD drive and turbocharger, set only FF drive and NA engine instead. As a result, the 7th generation Celica has been reborn as a model that combines excellent handling and ride comfort.

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!”

A first-year student at Otonokizaka Academy. She is mild-mannered and kind, but at the same time, she is reluctant to do anything. In order to fulfill her childhood wish to become an idol, she voluntarily joined the school idol group "μ's". She has more knowledge and passion for idols than anyone else. She spends her days and nights collecting and analyzing information about school idols. She also loves to eat rice and is quite a glutton. She is a childhood friend of Rin Hoshizora, a member of μ's.