Character Arc
Sim Eun-seok is the drama's central figure, an exacting elder judge who arrives at the juvenile division with a blunt declaration that she dislikes young offenders. That cold exterior masks a meticulous, almost forensic approach to her work: she distrusts easy narratives, double-checks the record, and refuses to let procedure be rushed. Her early scenes establish a judge who treats the courtroom as a place where facts must be earned rather than assumed.
As the season progresses, her hard stance is repeatedly tested by cases that resist simple verdicts. She clashes with colleagues over how much weight to give rehabilitation versus accountability, and she pushes investigations beyond the minor in the dock toward the adults, families, and institutions implicated in each situation. Her principles make her difficult to work with but also make her a relentless advocate for getting the full picture right.
Over the arc, the source of her convictions and her particular sense of duty comes into clearer focus, reframing her stated dislike of offenders as something more complicated than simple contempt. By the finale she stands as the show's argument in human form: that taking juvenile crime seriously means holding the entire system to account, not only the youngest people standing before the bench.