A mysterious red line reveals people’s most intimate secrets in the new Korean drama S Line, starring Lee Soo Hyuk, Arin, and Lee Da Hee. The fantasy thriller premieres on July 11, 2025, exclusively on Wavve.
What Is S Line About?
In S Line, red lines suddenly appear above people’s heads, connecting those who have had s**xual relationships. These lines, called “S Lines,” expose hidden secrets and create chaos in society. The story follows three main characters:
- Han Ji Wook (Lee Soo Hyuk): A free-spirited detective investigating the truth behind the S Lines.
- Kyu Jin (Lee Da Hee): A high school teacher with a mysterious past.
- Shin Hyun Heup (Arin): A student who has been able to see the red lines since birth.
The drama takes a twist when special glasses that reveal the S Lines start circulating, leading to dangerous consequences.
“When we first encountered the work, we wondered whether it would be possible to visually depict a world covered in S Lines. So, we decided that only some people could see them, through glasses as a medium,” said director Ahn Joo Young.
Cast and Characters
- Lee Soo Hyuk as Han Ji Wook – A detective with a troubled past.
- Arin (Oh My Girl) as Shin Hyun Heup – A high schooler who can see the S Lines.
- Lee Da Hee as Kyu Jin – A teacher hiding dark secrets.
- Lee Eun Saem as Kang Sun Ah – A bullied student who uses the glasses for revenge.
The cast has received praise for their performances, especially Arin, who transitions from her idol image to a serious acting role.
Release Date and Episode Schedule
S Line premieres on July 11, 2025, on Wavve. The drama has 6 episodes, with two episodes releasing every Friday. The final two episodes will air on July 25, 2025.
- Episodes 1 & 2: July 11
- Episodes 3 & 4: July 18
- Episodes 5 & 6: July 25
Where to Watch S Line
S Line is a Wavve original, meaning it will only be available on the Korean streaming platform. A subscription costs $15.99 per month, and no free trial is available.
International Recognition
Even before its release, S Line made history by winning the Music Award at the Cannes International Series Festival. It was the first Korean drama to receive this honor.
“I couldn’t believe it was real even when we were receiving the award,” Lee Soo Hyuk said about the Cannes win.
Why S Line Is Getting Attention
The drama explores themes of privacy, relationships, and social judgment in a world where secrets are no longer hidden. Its unique concept has sparked discussions online, with many comparing it to Black Mirror for its thought-provoking storyline.
Also read: Lee Da Hee Stars as a Mysterious Teacher with No “S Line” in Upcoming Thriller Drama
Credits: AsianWiki, IMDb, MyDramaList, Korea Herald, Canneseries
