The seemingly ordinary Woo Joo actually has a special trauma. Something bad happens to the person who says “cute” to Woo Joo! Woo-joo lost his first love due to that. In the end, in order to protect the people around him, he decides to pretend to be a worst and decadent person. Then one day, by chance, Han-gyeol, the son of the university president, calls him “cute”... For a moment, Woo-joo are afraid that Han-gyeol might get hurt because of him. In fact, he tells a ridiculous lie that he is a 'sex king' and that he had sex whenever he's bored. At that time, Hangyeol said something unexpected. “Then senior, do you want to have sex with me?”