Social. Sex. Secrets.
A young woman with the ability to see mysterious red connections between lovers discovers her secret gift is no longer unique when special glasses granting similar powers appear on the black market.
S Line (2025) is a sci-fi & fantasy, drama and mystery series that premiered on July 11, 2025, spanning 1 season and 6 episodes. It stars Lee Soo-hyuk, ARIN, Lee Da-hee and Lee Eun-saem. Viewers rate it 7.5 out of 10 across 172 ratings.
Watch the official trailer for S Line before you start streaming.
Lee Soo-hyuk
as Han Ji-wook
ARIN
as Shin Hyeon-heup
Lee Da-hee
as Lee Gyu-jin
Lee Eun-saem
as Kang Seon-ah
Kim Dong-young
as Oh Dong-sik
Lee Gwang-hee
as Joon-seon
Lee Han-joo
as Yoon Ji-na
Woo Ji-hyun
as Jung-woo
Nam Kyu-hee
as Kim Hye-yeong
Oh Woo-ri
as Lee Kyung-jin
Oh Seung-jun
as Lee Ji-won
Kim So-young
as Choi I-seo
Average viewer score of 7.5/10 from 172 ratings.
a girl was born with the ability to see red lines and we follow her and several characters that are directly or somewhat involved with the red lines. it was honestly rlly intriguing. i was in slump of what to watch and this hooked me from start to finish. each episode just kept hooking and surprising me. i loved seeing the dynamics on different people and how they interacted and used the glasses. it took a weird,,?…
Reviewed on July 30, 2025
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S Line (2025) is available to stream on Viu. Availability comes from JustWatch data and varies by country.
S Line has 1 season and 6 episodes in total, starting from its premiere on July 11, 2025.
No. S Line is marked as ended, with the final episode airing on July 25, 2025.
S Line (2025) stars Lee Soo-hyuk, ARIN, Lee Da-hee, Lee Eun-saem and Kim Dong-young. The full cast list with character names is available in the cast section of this page.
S Line (2025) is rated 7.5 out of 10 from 172 viewer votes, and suits viewers who like sci-fi & fantasy, drama and mystery series. Reviews from viewers are collected further down this page.
The official S Line trailer is embedded in the trailer section of this page and plays instantly in your browser.
