In order to pursue her dream of bringing positive changes to Japan, Mitsumi Iwakura leaves her countryside town to attend a prestigious high school in the hustle and bustle of Tokyo. As she has already mapped a clear life plan, she has absolute confidence that there will be zero mishaps from then onwards. Despite her ambitious promise, the country girl ends up running late on the first day when she gets 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 go with her. They eventually make it to school, but the misfortunes do not end there, as Mitsumi leaves an unfavorable first impression in front of 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.