Did I become the sexual partner of the guy who has been my friend for 13 years?! On the day of the class reunion, Taewon's pants were accidentally pulled down in front of Jayeong. The whole university was turned upside down by his magnificent and large size, and Taewon starts a relationship with Jayeong to heal his “trauma.” Since they had been friends for so long, Jayeong thought she knew Taewon better than anyone else. But the bitterness of losing her childhood friend was momentary. Is that the Taewon I used to know? ---Stop... Bastard! Having sex started as a misunderstanding (?) How will the relationship between the two develop? She starts a relationship with her friend because of an “obscene” moment!