Han Ji-wook is the investigator pulled into the case as the red lines begin upending everyday life. Methodical and guarded, he is used to building cases on evidence, and the sudden arrival of a phenomenon that broadcasts people's hidden connections forces him to rethink what proof even means when everyone can see the same threads he does.
As the social fallout widens, Ji-wook finds himself caught between the institutions that want to manage or suppress the phenomenon and the ordinary people whose lives are unraveling under public scrutiny. His investigation steadily shifts from the surface mystery toward the deeper question of where the lines come from and who stands to benefit from a world without privacy.
His uneasy partnership with the student who sees the lines most clearly becomes the emotional core of his arc. Forced to weigh duty against conscience, Ji-wook is pushed to decide whether exposing the truth helps people or simply feeds the crowd's hunger for judgment. (Character details flagged for fact-check.)
Han Ji-wook is one of the central figures in S Line, a thriller/mystery/drama/korean/social-thriller series that aired on Wavve from 2025. Within the narrative of S Line, Han Ji-wook serves as a pivotal character whose decisions and relationships drive key story arcs throughout Season 1. The character's journey has been central to many of the show's most memorable and discussed moments.
Portrayed by Lee Soo-hyuk, Han Ji-wook has become one of the most recognizable characters in modern television. Lee Soo-hyuk's performance brings nuance and depth to the role, creating a character that resonates with audiences on both intellectual and emotional levels. Lee Soo-hyuk's work has been recognized with 1 major award, reflecting the critical acclaim their portrayal has received.
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? Frequently Asked Questions
Han Ji-wook is played by Lee Soo-hyuk, who leads the series as the investigator drawn into the mystery of the red lines. (Character name flagged for fact-check.)
He is the investigator trying to trace the origin of the phenomenon while the collapse of privacy throws society into crisis. His arc centers on the conflict between pursuing the truth and protecting people from a culture of total exposure and public judgment.
