"I wanted to create a summery, sparkling youth." - And so the theme is "yosakoi*"!! For the sake of her younger sister's medical treatment, Natsume moves from her home in Tokyo to Shikoku. In a place where no one knows her, she decides to make her high school debut as a "cool beauty"! …This determined Natsume is approached by the wild child-like Yudai saying, "Join my team"?? Eeh!!? What do you mean by team!!?