Yang Yoo Jin

Two men meet and confront each other over a woman. Visibly different in appearance, the two men engage in a continuous battle of nerves. While the woman steps out to use the restroom, the men go up to the rooftop and start arm wrestling.

The story focuses on Yun Doo, a studious, normal girl. An old partner won't stop bothering her through messages, so she makes up that she has a boyfriend and posts a random photo of a guy. That picture turns out to be from Hyun Ho, one of the most popular and rebellious of the school. It's a school drama, with several romances in sight.