After he moved into the Narutaki apartments, art student Ryushi Shiratori learned the landlady Kozue Aoba is a girl who is younger than him, and she also has multiple personalities that take her over whenever she’s shocked. Besides Kozue, Ryushi contends with the aggressive Saki, the childish Nanako, the wacky Chiyuri, and the shy Natsume, along with his other eccentric neighbors. As time passes, the relationship between Ryushi and Kozue, along with her other personalities, becomes much closer and more precious for them, as do all the bonds with their other friends.
