To pursue her dream of bringing positive changes to Japan, Mitsumi Iwakura leaves her rural hometown to attend a prestigious high school in the bustling city of Tokyo. Since she has already mapped out a clear life plan, she possesses absolute confidence that there will be zero mishaps from then on. Despite her ambitious promise, the country girl ends up running late on her first day after getting lost on her way to school. Fortunately, she meets a fellow first-year student, Sousuke Shima, who is in the same situation and offers to accompany her. They eventually make it to school, but the misfortunes do not end there, as Mitsumi leaves an unfavorable first impression on her classmates. Nevertheless, the class soon takes notice of her friendship with Sousuke despite their opposing personalities. Only time will tell whether Mitsumi will be able to forge fruitful relationships with her classmates, and she will certainly not be alone.