Moo-young and Jin-kang’s relationship deepens, turning romantic. However, Moo-young’s ex-girlfriend, Jang Se-ran, appears, complicating things and hinting at his toxic past. Jin-gook warns Jin-kang that Moo-young is dangerous, but she defends him. By the end of the episode, it becomes clear that Moo-young is hiding a connection to Jin-gook’s past—a connection that could destroy the siblings' relationship.
Moo-young and Jin-gook have a violent confrontation. In a twist of fate, Moo-young saves Jin-gook’s life, proving that he is not the psychopath everyone believed him to be. The "sibling" dynamic is re-evaluated as they realize their bond is thicker than blood or grudges. the smile has left your eyes episode guide