Watch: OH MY GIRL’s Arin And Lee Soo Hyuk Dive Into A Dark Mystery In New “S LINE” Preview

Published on July 10, 2025 at 10:49 PM

Upcoming drama “S LINE”; has unveiled a new preview of its first episode, which airs today!

Based on the webtoon of the same name, “S LINE”; is a fantasy thriller in which red lines suddenly appear above people’s heads, connecting them to people with whom they have had physical relationships and thus revealing sensitive personal information overnight. This red line is called the “S LINE”; and can only be seen but not physically touched.

The new teaser begins with Hyun Heup (OH MY GIRL’s Arin) observing the mysterious red lines extending from people’s heads and narrating, “I’ve seen these lines since I was born. I was a cursed child who saw what others couldn’t, and I made up my mind—I had to find out why these lines appeared.”;

The preview then shifts to detective Han Ji Wook (Lee Soo Hyuk) investigating a crime scene. A voice-over adds a layer of suspense, with someone saying, “But I still can’t figure out what this bastard’s real motive is.”;

As the tension builds, a mysterious helmeted man appears, attacking a woman while ominously muttering, “The line is disappearing.”; Arin then closes the teaser with a chilling question: “Could that man see the S Lines like I do?”;

Watch the full preview below!

“S LINE”; is set to premiere on July 11.

In the meantime, watch Lee Soo Hyuk in “Doom at Your Service”; below:

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