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Avid K-drama fans are raving about Wavve’s latest psychological series S Line. The series deserves all the love and recognition it is getting from critics and fans alike.
The show has already received international recognition after being selected as one of the five Korean titles for the Cannes International Series Festival 2025. It further made history by winning the award for Best Music, becoming one of the first Korean shows to win at Cannes.
S Line is based on a popular 2011 webtoon written by Kkomabi and illustrated by Angmabi. It follows a world where red visible lines shoot out of people’s heads, connecting them with those they’ve had physical relationships with.
A high school student, Hyun-hyeup (Arin), possesses this innate ability to see these red lines.
However, things get complicated when she discovers that a special pair of glasses allows anyone to see the lines. This exposes everyone’s s*xual desires and relationships out in the open. Actor Lee Soo-hyuk also stars as Han Ji-wook, a detective with s*x addiction, who has many red lines sprouting above his head.
More on this in our story.
S Line is based on a popular webtoon of the same name
S Line has taken the K-drama world by storm, and the show is being appreciated for its unique premise, which blends suspense and the crime genre effortlessly.
The K-drama was adapted from an equally popular webtoon, which was released from November 2, 2011, to November 22, 2012. It was spread across 3 volumes and contained a total of 52 chapters. Kkomabi’s works often reflect similar themes to S Line, which include A Killer Paradox, 3rd Person, and Imaginary Dragon.
While director Ahn Joo-young’s adaptation is based on the premise of the webtoon, it adds another mysterious layer to the story. The original webtoon explored the harrowing effects of these red lines and how they impacted the characters’ lives. However, in the K-drama, only a select few people can see the titular lines, with a mysterious pair of glasses granting them this ability.
At a press conference in Yongsan, Joo-young discussed the changes made to the K-drama adaptation from the original webtoon:
"When we first encountered the work and began the project, we wondered whether it would be realistically possible to visually depict a world covered in S Lines. So, we decided to retain the universe, but express it in a different way.''
She added:
''That led to the idea that only some people could see the Lines, and that they could be seen through glasses as a medium.''
The twist involving the mysterious pair of glasses is already a hit among fans of the webtoon, and this added detail has made the story even more intriguing and interesting.
Wavve's latest K-drama explores unconventional themes
S Line certainly crosses all boundaries and explores unconventional themes of physical intimacy and desire openly. It is not a K-drama that only touches on these taboo subjects, but rather one built entirely around them. While K-dramas are known for their intensity and intriguing storylines, the premise of this latest series is especially bold and a step forward for the genre.
While romance is the most common genre in K-dramas, S Line takes it up a notch. It introduces visible red lines above people who have had physical relationships with one another. The show subverts norms around privacy by making these connections strikingly visible.
Joo-young further discussed the scope of her adaptation:
''It mostly focuses on how people change when the lines appear and others begin to see them. I believed the main theme was how new desires emerge in addition to human nature, so I wanted to reflect those changes through the characters via the S Lines. Based on that, we also created new characters."
The K-drama not only exposes every physical relationship but also questions the fragility of those bonds. It explores how many of them are formed solely through physical intimacy.
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