With the help of a relative, Jinbo rents his uncle's apartment. He has been studying hard and has gone on to graduate school, but he is Kokoro to his neighbor, Sei , in his new home. However, he has no experience with women and can only feel anguished. One morning, when they pass each other Sei taking out the trash, Kiyoshi can see through his life without women... Sei demands that Jinbo obey her orders, on the condition that she loses her virginity. From that day on, he begins to be toyed with by her...