One day, Tanaka, bored out of her mind, decided to invent nicknames for her classmates. She called one friend, Sakuti, "Otaku" because of her interests, and another, Saginohmi, "Robot" because of her reserved nature. The friends decided to call Tanaka "Duro." Thus, day after day in carefree fun, the three friends conquer (or not) new heights of youth…