Character Arc
Kang Won-jung is the senior presiding judge who oversees the juvenile division, an experienced figure attuned to the institutional and reputational pressures that surround the court. He is conscious of how cases are perceived beyond the courtroom and of the politics that can shape a judge's career, which sometimes places him at odds with the more single-minded Sim Eun-seok.
Through Kang Won-jung the drama examines the world above the individual case: budgets, public attention, and the ambitions that can pull a court in directions unrelated to the young people it serves. He is not written as a simple antagonist but as a study in how competing incentives operate inside a justice system, and his choices raise pointed questions about what leadership in such a setting should look like.
As the season develops, his arc tests where his loyalties ultimately lie, between institutional self-interest and the court's stated mission. His presence broadens the show's critique from courtroom procedure to the surrounding structures, reinforcing the series theme that the failures behind juvenile crime are as much about adults and systems as about the minors themselves.