Synopsis

Changsu becomes self-conscious about his appearance after noticing Jihun's glow-up and starts obsessively asking Jihun to work out with him. Jihun initially refuses due to his responsibilities for Chaerin, but eventually gives in with the help of a professor's clever suggestion. While exercising, Changsu struggles immensely while Jihun seems to effortlessly improve, leading Changsu to believe Jihun may have a hidden talent for sports. Finally, the narrative reveals that Chaerin is the reason for Jihun's improvements.