Shiratori Ryushi aspires to become a picture book writer and moves into Narutaki-So, an apartment, to attend art school in Tokyo. Narutaki-So is an old, single-story Japanese-style house that clashes with the urban landscape. It is owned by his mother's cousin, and the apartment manager is Aoba Kozue. She is his second cousin; they met in childhood, though he barely remembers her. She is a second-year student at a high school attached to Aoba Junior College. Five people live in Narutaki-So. First, Chanohata Kotomi resides in Room #1. She is Kozue's best friend. Next, Momono Megumi lives in Room #3. She is the type of person who follows her own path. In Room #5, Kurosaki Sayoko lives with her daughter, Asami, who is in the first year of junior high. Finally, Haibara Yukio lives in Room #6 with his puppet, "Johnny". They are all distinctive and eccentric individuals. However, Kozue is actually the most eccentric. She has a secret: when shocked by something, her personality changes. Unaware of this, Shiratori moves into Narutaki-So to pursue his dream. What kind of new life awaits him?