Mistaken for a girl due to his delicate features, Shiina Aki decides to change his image by moving to Tokyo and enrolling in a new middle school. He finds a home at Sunohara-sou, where he meets the friendly caretaker Sunohara Ayaka and three female members of the student council - Yukimoto Yuzu, Yamanashi Sumire, and Kazami Yuri. Aki's new life in Tokyo begins as he shares a home with four girls.