The S Lines is a dark fantasy crime thriller K-drama that originated from South Korea and features Lee Soo-hyuk and Lee Da-hee in leading roles. The first 6 episodes of the K-drama aired from July 11 to July 25, 2025, on Wavve. The premise of the K-drama is based on a webtoon by the author Kkomabi (on Naver) about the sudden appearance of red lines over people’s heads, indicating previous sexual relationships with others. The lines create chaos for the characters in the show (murder investigations and supernatural occurrences).
As of March 2026, Wavve has not officially renewed The S Lines for Season 2 (Wavve or the production company Sidus Pictures – directed by Ahn Joo-young). Reports in July after the finale of the first season (e.g., The Review Geek, etc.) did not mention any type of renewal for Season 2 based on viewership trends.
The devastating, open-ended nature of the show has led many fans to speculate about what happened, with theories about the origin of the lines, the mastermind behind them, and what they may be evolving or hiding from. Some fans see the overall arc of the source material as having the potential for a prequel-like first season and have moved to create fan art reflecting these alternatives. Recent online discussions about the show’s future have been prevalent in fan communities, especially on Instagram and Reddit, and have led fans to speculate about the existence of a second season. There are even some posts claiming that season 2 will premiere in 2026 or is confirmed, but most of these appear to be unofficial.
There are no announcements regarding cast, filming, or platform for renewed episodes, and the odds of renewal are tied to streaming numbers, general interest, or buzz (it was a contender at Canneseries), and how deep the source material for the show is. Therefore, as of right now, the show’s future is to be announced, and fans hope that the search for answers will carry on, but there has not been any firm indication that it will.