1: Episode 1
Jul 11, 2025
Season 1
S Line
6 EPISODES • 2025
Han Ji Wook is a detective looking to know what is the truth behind the mysterious red line.
Kyu Jin, a funny high School teacher. Hyun Hob, a high schooler who has been able observe the red line from birth.
The show will present the story of a cryptic red line that appears over head of the people in the show, connecting them to people with whom who have had sexual relations with them.Episodes
2: Episode 2
Jul 11, 2025
3: Episode 3
Friday
4: Episode 4
Friday
5: Episode 5
10 Days
6: Episode 6
10 Days
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