Series synopsis
S Line, also known as S라인 is a South Korean sci-fi & fantasy drama mystery television series that premiered on wavve on July 11, 2025. It ended on July 25, 2025. It was created by Ahn Joo-Young, Kkomabi. It stars Lee Soo-hyuk, ARIN, Lee Da-hee and Lee Eun-saem.
A young woman with the ability to see mysterious red connections between lovers discovers her secret gift is no longer unique when special glasses granting similar powers appear on the black market.
Premise
A young woman with the ability to see mysterious red connections between lovers discovers her secret gift is no longer unique when special glasses granting similar powers appear on the black market.
Premise: Social. Sex. Secrets.
Cast and characters
Leading cast
- Lee Soo-hyuk as Han Ji-wook
- ARIN as Shin Hyeon-heup
- Lee Da-hee as Lee Gyu-jin
- Lee Eun-saem as Kang Seon-ah
- Kim Dong-young as Oh Dong-sik
- Lee Gwang-hee as Joon-seon
- Lee Han-joo as Yoon Ji-na
- Woo Ji-hyun as Jung-woo
Supporting cast
- Nam Kyu-hee as Kim Hye-yeong
- Oh Woo-ri as Lee Kyung-jin
- Oh Seung-jun as Lee Ji-won
- Kim So-young as Choi I-seo
- Park Seong-il as Bang Seong-jin
- Lee Ga-sub as Oh Jung-min
- Park Ye-ni as Hee-won
- Jeong Jae-kwang as Bartender
- Jang Sun as Hyeon-heup's Mother
Guest cast
- Oh Ah-yeon as Kwak Chae-rin (Eps 3)
- Shin Dong-mi as Police Station Woman
- Cho Han-cheul as Kim Byeong-Cheol (Eps 3)
- Lee Sang-hee as Kyung-Mi (Eps 3)
Episodes
This series spans 1 season with 6 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 1 | 6 | July 11, 2025 | July 25, 2025 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
The Girl With The Sunglasses Hyun-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 Hyun-heup becomes a reclusive loner for a long time. Then one day, a series of suspicious murders occur around Hyun-heup, and Hyun-heup uses his ability to see the S-line to track down the case... |
July 11, 2025 |
| 2 |
The Animal Kingdom Hyun-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, Seon-ah is a victim of bullying from bullies. One day, when the bullying from bullies reaches its peak, Seon-ah discovers a mysterious pair of glasses in her locker... |
July 11, 2025 |
| 3 |
A Fall Into Darkness Seon-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, Jung-woo, an English teacher at Bangju High School, witnesses his girlfriend's affair before their wedding and breaks off the engagement. And soon after, he finds a pair of glasses on his desk... |
July 18, 2025 |
Production
Release
| Original network/platform | wavve |
|---|---|
| First aired | July 11, 2025 |
| Last aired | July 25, 2025 |
| Status | ended |
| Schedule | Friday at 11:00:00 |