Dae-hyun's affluent girlfriend whose relationship is strained by class differences and insecurity over Saet-byul. She initially demands Saet-byul's departure but later feels guilty upon discovering Seung-joon's betrayal. She attempts to elevate Dae-hyun's career and reconcile, but ultimately accepts his rejection and resigns to start fresh abroad.
Former couple whose relationship fractures due to jealousy and external interference.
Antagonistic dynamic driven by mutual romantic interest in the same man.
New romantic pairing formed after Yeon-Joo's breakup with Dae-Hyun.
Explore the full interactive character relationship map of Backstreet Rookie