Adultery awakens the lustful instincts that lie dormant within a woman! One day, Kokoro stumbles upon married Sakurano having an affair. While she is waiting for an elevator, Sakura suddenly appears and forcibly pulls Kokoro into her room, asking her to come in for tea. "Having an affair is fun. Are you happy with your life now?" she seduces. A few days later, as Kokoro is walking down the street, a wallet falls out of the pocket of a passerby in front of her. Kokoro picks up the wallet and puts it in her bag without stopping the man. Sakura at the whole scene from behind! And then...