Bairenhua, my classmate at university, is a girlfriend who I'm proud of and also works as a fashion model. It's a miracle that she's dating someone like me. One day, she gets invited out drinking by her clubmate Oikawa. I'm not keen, but I'm worried so I go along with her. Even though she becomes the target of an erotic game, I can't do anything because I'm hiding our relationship. I fall asleep and wake up to find Oikawa and the others having sex...