S01E0151:181. The Girl With The SunglassesHyun-heup, a girl who was born with the ability to see the S-line that indicates sexual relations. Because of this ability, Hyun-heup's family faces tragedy, and…
S Line Season 1 – Watch online
6 episodes · since July 11, 2025
Hyeon-heup has been able to see the mysterious 'S lines' since birth, a secret only she could perceive. But when special glasses allow others to see it too, long-buried secrets and hidden connections surface, pulling her into a web of desire, betrayal, and dangerous truths in this haunting thriller.
S01E0151:181. The Girl With The SunglassesHyun-heup, a girl who was born with the ability to see the S-line that indicates sexual relations. Because of this ability, Hyun-heup's family faces tragedy, and…
S01E0251:322. The Animal KingdomHyun-heup goes to Bangju High School after receiving a mysterious text message. There, he reunites with Seon-ah, a middle school classmate and Ji-wook's niece. However…
S01E0357:583. A Fall Into DarknessSeon-ah falls from the rooftop and falls into a coma. Ji-wook cries out in self-reproach and anger, and cooperates with Hyun-heup to find the culprit. Meanwhile…
S01E0455:054. Miseong MotelJi-wook, who was continuing the investigation to find the culprit of the Seon-ah incident, hears about the S-line from Hyun-heup, but doesn't believe it. Meanwhile, Bang…
S01E0555:315. The GlassesJi -wook, who finally discovered glasses in the bloody bathtub of aesthetic, admits that the words of Hyun -suk were true. Use the power of glasses to start an…
S01E0651:536. Chaos on the HorizonJi -wook finds out the truth about Sun -ah's S -line through glasses. Meanwhile, Hyun -suk, ahead of his 18 -year -old birthday, makes a big decision and meets the Jun…Where to stream S Line Season 1
No streaming offer listed in the United States yet.
Availability provided by JustWatch via TMDB. Offers in the United States, subject to change.
About season 1
Season 1 of S Line has 6 episodes, aired from July 11, 2025 to July 25, 2025 on wavve. Episodes run 53 minutes on average. The highest rated episode is “A Fall Into Darkness” (S01E03, 6.5/10).
Frequently asked questions about S Line Season 1
How many episodes are in S Line Season 1?
S Line Season 1 has 6 episodes.
When did S Line Season 1 air?
The first episode aired on July 11, 2025 and the last one on July 25, 2025.
Where to watch S Line Season 1 online?
No legal streaming offer is listed in the United States for S Line yet (source: JustWatch via TMDB). Availability of each season depends on the platform.