Ayumi can't hide her joy that her reclusive son, Kenta, has brought a friend. His friend Sasaki is a kind, high-achieving honor student who is trusted by his teachers. However, no one knew that Sasaki had a hidden face. His friendship with Kenta is all about play. Sasaki's real purpose is to get Ayumi's body. In order to take care of the busty body that unconsciously emits a scent of color, Sasaki moves into action ...