In May 1983, Toyota's popular model, the Corolla, underwent a model change to the 5th generation (E80 series), It was the first Corolla model to adopt front-wheel drive (FF), abandoning the RWD layout that had been used until then. On the other hand, the Corolla Levin/Sprinter Treno, which were sporty versions of the Corolla, took a different path. Based on the platform and suspension of the previous generation Corolla Levin/Sprinter Treno (TE71), which had adopted an RWD layout, improvements were made, the fourth generation Corolla Levin/Sprinter Treno, which was different from the Corolla, was born in May 1983. At the time, it was unknown to Toyota whether it would be possible to achieve driving performance appropriate for a sports car with an FF layout, for the Levin/Treno, the proven FR layout was judged to be more suitable. Thus, the fourth generation Levin-Treno was named AE86, was a carryover from the previous generation and adopted a conservative and simple mechanism. However, the fourth generation Levin-Treno was not simply an improved version of its predecessor. The newly developed 4A-GEU engine with DOHC 16 valves was introduced, and the body was made both more rigid and significantly lighter, This was a definite improvement in the fighting power of the car. Furthermore, two types of bodies, a 3-door hatchback and a 2-door notchback, were prepared, as for the front mask, while the Levin adopted square headlights, the Torreno featured retractable headlights. The AE86, which was sold at an affordable price for young people, became an exceptional hit for a sports car. The AE86's simple mechanism provided a direct driving feel, and the good engine response, and highly controllable handling characteristics, all of which captured the hearts of many drivers of the time. As a result, many tuning menus were developed for the AE86, As a result, many tuning menus were developed for the AE86, and the car was used in gymkhana, rally, racing, and other motorsports events. The AE86's straightforward handling characteristics taught drivers how good or bad their driving was, the AE86 also served as a training machine for Japanese racing drivers and rally drivers. Even today, in the 21st century, the popularity of the AE86 has not waned, as a rare sports car that continues to be loved beyond time and generation It continues to be driven on mountain passes and circuits.

Nanako Usami, a high school girl living in Nagarekawa City, a small regional city, was begged by her uncle, who works at the city hall, to participate in a stage show at a zoo for the purpose of revitalizing the town. She met her high school senior, Yukari Kohinata, who was also going to perform on stage. Nanako, with the help of Yukari's advice, successfully completes her stage performance, which leads her and Yukari to work together as the "Nagaregawa Girls," local idols (locodolls) who promote Nagaregawa City, at events and on cable TV, earning a fee of 1,000 yen per hour, generated from the taxpayers' money of the city residents. The project gets into full swing with the addition of Yui Mikoze, who is in charge of the yuru-chara "Uogokoro-kun" and putting on Uogokoro-kun's costume, and Saori Nishifukai, her uncle's subordinate, as managers.

She is a second-year high school student at Nagarekawa Third Girls' High School. She is the grandson of the former mayor of a wealthy family and is the daughter of a very wealthy family. By chance, she became a member of "Nagarekawa Girls," a local idol group that promotes Nagarekawa City. She has a very mild-mannered personality, good looks, excellent style, and excellent academics, but she is a bit of a naive. She loves Nanako, a junior student at school and a member of the "Nagarekawa Girls".

She is a first-year high school student at Nagarekawa Third Girls High School. Her uncle, a city hall employee, begged her to become a member of the "Nagarekawa Girls," a local idol group to promote Nagarekawa City. She is a serious person, and her motto is to give her all in everything she does. Her childhood dream was to become an idol.