The second generation of Subaru's popular Impreza. Subaru focused its development efforts on improving collision safety in the second-generation Impreza. Accordingly, the body design was redesigned, the body size was increased, and the body rigidity was dramatically improved compared to the previous generation. At the time of sales of the second-generation Impreza, Subaru was searching for a new design direction, and the second-generation Impreza underwent two major front design changes in line with the change in Subaru's design direction, resulting in the rare model that had three completely different front masks during the model cycle. In addition, as in the previous generation, a rally-based WRX model equipped with a 4WD mechanism and a turbo engine was set up as a base machine for competing in the World Rally Championship (WRC), boasting high dynamic performance on various surfaces such as dirt, snow, and tarmac. Rally cars based on this model won the WRC drivers' title for Richard Burns in 2001 and for Petter Solberg in 2003.

Uranohoshi Girls’ High School, a private school in the seaside neighborhood of Uchiura at Numazu city, Shizuoka prefecture. A small high school in a corner of Suruga Bay, it is home to nine teens, led by second-year student Chika Takami, driven by one seriously big dream: To become the next generation of bright, sparkling “school idols”! As long as we don’t give up, any dream can come true... All we have to do now is keep pushing hard for glory! Now their “School Idol Project” begins to make their dreams come true!

A fallen angel who descended upon Aqours. She is a first-year student at Uranohoshi Girls’ High School. She is a friend of Aqours member Kunikida Hanamaru, who went to the same kindergarten as her, and they unexpectedly met again at Uranohoshi Girls’ High School. A severely chunibi patient, she calls herself a fallen angel and delivers dubious rituals on a website that looks like Nico Nico Douga, a popular Japanese video-sharing website. On the other hand, she is extremely ashamed of her chunibyo-like behavior and attitude, and has tried to hide her true nature as much as possible during her high school life. However, Chika Takami, the founder of the school idol group Aqours, affirms her true nature. As a result, she decides to cooperate with Aqours as a member.