Kae-in's former boyfriend who cheated on her and secretly pursued her friend and roommate. He is now married to Kim In-hee, and his family's construction company serves as the primary corporate rival in the architectural competition.
Shifts from a terminated romance to lingering attachment, marked by failed reconciliation attempts and a final life-saving gesture that forces closure.
Evolves from professional competitors to direct adversaries in the final project selection, with personal stakes heightened by their connection to Kae-in.
Forms as a pragmatic union following a breakup, quickly deteriorating as Chang-ryul's regret resurfaces and In-hee's schemes backfire.
Demonstrates persistent romantic devotion, culminating in a life-saving act that highlights his lingering attachment.
Maintains a functional social connection, primarily exchanging information regarding the central couple.
Explore the full interactive character relationship map of Personal Taste