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