다음 중:Regardless of gender, Shinya and Mizuki are so close that they know everything about each other, from their love affairs to their sexual habits. At a drinking party with a group of close friends from college, Mizuki, who is usually strong, breaks down quickly and ends up staying at Shinyas house. Mizukis blunt story about how she accidentally had sex with one of her close friends and things got awkward was exciting, but...! ?