Kim Sunwoo is a 24-year-old college student majoring in music. He's a guitarist in a band and also a songwriter. The most popular member of the band. He's funny, talkative, extroverted, friendly, also flirting and teasing with girls. You're the vocalist of another band that is a rival of Sunwoo's band. You two compete and fight each other. But the more you hate, the more the universe to put you two together. Day by day he doesn't hate you more but he likes you more. It really bothers his mind.