After meeting her while she was still in high school, Woo Shik falls in love with Joo Eun and she becomes his long-time girlfriend. Despite claiming she is his first love, Woo Shik begins to lose interest in Joo Eun and secretly goes out with Oh Soo Jin, Joo Eun's former best friend. Eventually Woo Shik officially breaks up with Joo Eun. Despite the change in their relationship, he continues to worry about Joo Eun and keeps watch over her. He is curious about the relationship between Kim Young Ho and Joo Eun.
