In the early 1990s, there was a minivan boom in Japan, with new minivans being launched one after another by Japanese manufacturers. However, Honda did not have a minivan line-up at the time. As a result, Honda was outperformed in the Japanese market, and Honda's performance was deteriorating at the time. In order to break out of this situation, Honda was developing a minivan based on the existing Accord. This was the first-generation Odyssey (RA model), released in 1994. Based on the chassis of the Accord sedan, the first-generation Odyssey was well received for its concept of a minivan with a low sedan-like roof, and became a huge bestseller in the Japanese market. The success of the first-generation Odyssey led to a rapid recovery in Honda's business, and the Odyssey was subsequently positioned as one of Honda's core models. This vehicle is the third-generation Odyssey (RB model). By adopting a newly developed platform, the Odyssey was able to achieve an overall height that allowed it to fit into standard Japanese mechanical multi-storey car parks, despite being a minivan, and it was very well received in the Japanese market. On the other hand, the new platform, which pursued a low centre of gravity, had an unexpected by-product. The third-generation Odyssey ended up demonstrating extremely high driving performance, and its handling was described as being close to that of a sports car.

Otonokizaka Gakuin, a traditional school located between Akihabara, Kanda and Jimbocho, is on the verge of consolidation. Nine girls, led by second-year student Kosaka Honoka, rise up to meet the school's crisis. What we can do to protect our favourite school. ...... That is to become an idol! Become an idol to publicise the school to the world and increase enrolments! This is where the girls' 'story of making it happen together' School Idol Project began!

The universe's NO.1 idol. Head of the Otonokizaka Academy Idol Club, to which μ's belongs. 3rd year student. In the past, she founded and served as the head of the idol research club, She is an idol geek from the bottom up. She is more passionate and devoted to idols than anyone else, Before joining μ's, she studied as a school idol on her own. Therefore, she has determined the direction of μ's as a school idol by providing guidelines for the other μ's members, who were not originally familiar with the situation of school idols. She is also in charge of comedy in μ's and plays the role of a comedian for the other members. She is the mother of two younger sisters and a younger brother, and looks after them on a daily basis. She is a good cook. Her signature phrase is 'Nikki-nikoni-nikoni-'.

In charge of music production in μ's. First-year student at Otonokizaka Academy. The only daughter of a wealthy family whose parents run a large hospital. She is hard-working and proud, but at the same time she is not good at communicating with others. She had aspirations to become a musician, including writing her own songs, but her parents expected her to take over the hospital as a doctor, and she almost gave up on her dream of becoming a musician. At that time, she was approached by Honoka Kousaka, the founder of the school idol group μ's, to write music for μ's and join as a member of μ's. After some hesitation, she agreed and became a member of μ's. She then pursued her dream of becoming a musician once more.