
Lee Soo Hyuk, Lee Da Hee, and Arin are making waves with their striking performances in S Line.
The original drama from Wavve is quickly gaining traction. Its provocative premise centers around characters connected by red lines, which signify sexual relationships. The story follows Detective Ji Wook (played by Lee Soo Hyuk), who is investigating a murder while also being the uncle of Seon Ah (Lee Eun Saem). Other central characters include Gyu Jin (Lee Da Hee), Hyun Heup’s (Arin) homeroom teacher, and Hyun Heup herself, a young girl who possesses the ability to see these mysterious red lines.

Lee Soo Hyuk shared his thoughts on the series’ bold concept, stating, “The idea of people being linked by red lines because of their sexual encounters is undeniably compelling. I think viewers will be fascinated by the complex human reactions that emerge when someone’s hidden life is exposed. Beyond the red line concept, the show dives deep into the duality of human nature.”

Lee Da Hee also offered her perspective, saying, “This series explores human instincts, desires, and raw emotions that people often keep hidden. It’s an intense look into our unfiltered selves.” Arin added, “I think viewers will find it mysterious and full of twists that keep them guessing throughout.”
Arin, who has already shocked audiences with her bold transformation in the trailer and the first few episodes, is garnering plenty of attention. For fans who are familiar with her as the youngest member of OH MY GIRL, her role in S Line offers a completely fresh side of her. Speaking about her character, Hyun Heup, Arin explained, “Since I’m the only character with this unique ability, I had to find a balance. I wanted to fit in seamlessly with the other characters while still emphasizing what makes Hyun Heup special. She’s very different from my real-life persona, so I tried to bring out aspects of her that contrast with who I am.”

As anticipation continues to grow, S Line is set to air its penultimate fifth episode on July 25, followed by the highly anticipated series finale.