Character Relationships in S Line
Han Ji-wook (played by Lee Soo-hyuk) is a protagonist in S Line.
Shin Hyeon-heup (played by ARIN) is a protagonist in S Line.
Lee Gyu-jin (played by Lee Da-hee) appears in S Line.
Kang Seon-ah (played by Lee Eun-saem) appears in S Line.
Oh Dong-sik (played by Kim Dong-young) appears in S Line.
Joon-seon (played by Lee Gwang-hee) appears in S Line.
Yoon Ji-na (played by Lee Han-joo) appears in S Line.
Jung-woo (played by Woo Ji-hyun) appears in S Line.
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Character Relationship Map: S Line
S Line (2025) character relationship network mapped with AI analysis. Explore the connections, alliances, and conflicts between characters.
Characters
Han Ji-wook
(played by Lee Soo-hyuk) — protagonist
Shin Hyeon-heup
(played by ARIN) — protagonist
Lee Gyu-jin
(played by Lee Da-hee) — supporting
Kang Seon-ah
(played by Lee Eun-saem) — supporting
Oh Dong-sik
(played by Kim Dong-young) — supporting
Joon-seon
(played by Lee Gwang-hee) — supporting
Yoon Ji-na
(played by Lee Han-joo) — supporting
Jung-woo
(played by Woo Ji-hyun) — minor
Kim Hye-yeong
(played by Nam Kyu-hee) — minor
Lee Kyung-jin
(played by Oh Woo-ri) — minor
Key Relationships
Oh Dong-sik → Joon-seon
(Conflict Competitors)
Kim Hye-yeong → Lee Kyung-jin
(Alliance Allies)
Lee Gyu-jin → Jung-woo
(Conflict Conspirator)
Han Ji-wook → Joon-seon
(Conflict Rival)
Han Ji-wook → Yoon Ji-na
(Romantic Interest)
Shin Hyeon-heup → Kang Seon-ah
(Family)
Lee Gyu-jin → Shin Hyeon-heup
(Professional Mentor)
Han Ji-wook → Shin Hyeon-heup
(Narrative Protective Figure)
Han Ji-wook → Lee Gyu-jin
(Professional Informant)
Han Ji-wook → Oh Dong-sik
(Professional Colleagues)
Story Analysis
A mystery thriller exploring how visible connections to past sexual partners transform society and relationships
Plot Progression
The Visible World
Unlikely Connections
Truth Revealed
New Normal
Directed by Ahn Joo-Young
S Line (2025) · 7.5/10 · drama, mystery, sci-fi-fantasy
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