Natsuki and Fuyumi are sisters who run a thrift store selling Japanese clothing. One day, Natsuki's boyfriend Kazuya introduces her to his father, Toshikage. At that moment, Natsuki and Toshikage sense something in each other. Natsuki invites Toshikage into her room, and they make love passionately. However, Fuyumi happens to witness the two of them...