The campus, brimming with youthful restlessness and agitation, sees emotions boiling over不分day and night. Every night, the male dormitories are always bustling with excitement as various topics about sex are discussed fervently. Being in the hazy period of adolescence, they have endless curiosity and yearning towards sex. "For three years, we've only kissed, to the point where our numb mouths have become as hard as a chicken's kidney."
The couple Eun-jo (played by Im Chang-jung) and Kyung-ah (played by Song Ji-hyo), who struggled through difficulties to be together, were already a major news story on campus — because the female is not only the school beauty with an S-shaped curve but also the top seed in the swimming department with hopes of becoming a national representative, while the male is just the chairman of the unremarkable K-1 club with no special talents. For three years, their intimate relationship has only been limited to kissing. Eun-jo's repeated attempts to take his relationship with his girlfriend further have failed, leaving him no choice but to channel his vigorous energy into training. On the other hand, Kyung-ah has distanced herself from her boyfriend due to her deep love for him. Their romance, between the top swimmer Kyung-ah and Eun-jo whose future is uncertain, is not favored by outsiders. However, Eun-jo, who can only sit in the library every day observing and studying girls, believes in love. Even when he gets beaten up by his girlfriend sometimes, he has no complaints and is mockingly referred to as the "last pure-hearted man of the 21st century" by his friends.
Sexual Fulfillment Chapter
"In this world, you are my first woman."
"But I'm not ready psychologically."
"I think you're not suffering from sexual dysfunction, but rather you're a Taoist!"
Cheng-guo (played by Choi Sung-guk), excelling in both academics and sports, adheres to the belief that "a love triangle is a necessity of the times," skillfully maneuvering between Yu-mi and Yeong-cha of the swimming department after tasting the forbidden fruit, making Eun-jo envious. Eun-jo lives life as monotonously as the K-1 club. Determined to help him achieve this "great sexual desire," Cheng-guo and other club members come up with mischievous ideas that make Eun-jo appear quite "strange" in front of Kyung-ah, scaring her so much that she once had to call the police to calm things down.
Sexual Evaluation Chapter
"Are you very busy? Where should we go on our first date?"
"Right here."
"Then where should we go next...?"
The more Eun-jo wants to deepen his relationship with Kyung-ah, the worse he performs. To ignite his fighting spirit of love, Cheng-guo deliberately lets his friend Ji-choo pretend to be an admirer and get close to Kyung-ah. Ji-choo, who is excellent in all aspects and handsome, launches a passionate pursuit of Kyung-ah. In order to win Kyung-ah, Eun-jo almost loses her heart... Love faces an unprecedented severe crisis.