Mizuki and his wife are asked by Murakami, her husband's childhood friend, to sign the witness section of the divorce papers. - The two men hesitantly agree, but Murakami, who has been away from his wife and has lost his sexual desire, ends up lusting after his friend's wife. - Murakami takes advantage of Mizuki's kindness and complains about the pain of being single. - Mizuki, who was invited to sympathize with him, eventually...