Difference between revisions of "S Line"

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Drama: S Line
Revised romanization: S Line
Hangul: S라인
Director: Ahn Ju-Young
Writer: Ggomabi (webcomic), Ahn Ju-Young
Network: Wavve
Episodes: 6
Release Date: July 11, 2025 --
Runtime:
Language: Korean
Country: South Korea

Plot Synopsis by AsianWiki Staff ©

Suddenly red lines appear above people’s head. These red lines connect people who have had sex relations. Due to this, embarrassing or secret sides of people are revealed. People call these red lines "S Line."

Han Ji-Wook (Lee Soo-Hyuk) is a detective with an attractive appearance and free spirit. He chases after the truth of the S Line. Kyu-Jin (Lee Da-Hee) is a high school teacher with unique charm. Shin Hyun-Heup (Arin) is a high school student. She has been able to see the red lines since she was born.

Notes

Based on webcomic "S Line” by Ggomabi (published November 2, 2011 - November 22, 2012 via Naver).

Cast



Lee Soo-Hyuk	Arin	Lee Da-Hee
Han Ji-Wook	Shin Hyun-Heup	Lee Kyu-Jin

Bangju Police



Kim Dong-Young	Jung Hyung-Suk	Sung-Lyoung
Oh Dong-Sik	team leader	Kang Soo-Min

Bangju High School



Lee Eun-Saem	Nam Kyu-Hee	Lee Gwang-Hee	Oh Woo-Ri	Oh Seung-Jun
Kang Sun-A	Kim Hye-Young	Yoo Joon-Sun	Lee Kyung-Jin	Lee Ji-Won



Park Sung-Il	Woo Ji-Hyun	Jeong Mi-Hyeong	Kim Jeong-Woo	Jeong Tae-Seok
Bang Sung-Jin	Jung-Woo	Kim Mi-Seong	music teacher	Korean history teacher



Hwang Jung-Yoon	Seo Young-Sam	Kim Ga-Young
Ms. Lee	Head of Academic Affairs	Administrative Office Manager

Wansung Villa Apartments



Park Ye-Ni	Lee Ga-Sub
Hee-Won	Oh Jung-Min

Shin Hyun-Heup's Family



Jang Sun	Kim Ro-A
Shin Hyun-Heup's mom	Shin Hyun-Heup (child)

Jung-Woo's Group



Lee Sang-Hee	Jo Han-Chul	Oh Ah-Yeon
Kyung-Mi (ep.3)	Kim Byeong-Cheol (ep.3)	Kwak Chae-Rin (ep.3)

Music Teacher's Group

Bae So-Young

Ri-Sa (ep.4)

Others



Kang Ji-Hoon	Jeong Jae-Kwang	Shin Dong-Mi
reporter (ep.1)	bartender (ep.2)	police station woman (ep.4)

Additional Cast Members:

Lee Han-Joo - Ji-Na
Hong Suk-Bin - Han Hyo-San
Byun Joo-Woo - nursing home staff (ep.1)
Yun Ki-Chang - PE teacher (ep.2)
Lee Bo-Ram - cult member

Trailers

Comments

Lee Hyeon Jeong Aug 27 2025 10:57 am @d The actor who portrayed Seo Han Yu is Kim Jun Hyung.

paimo Aug 27 2025 10:42 am wtf with the ending? its baffled me, they try hard to build up the story but end up destroy them miserably. so dissapointing with the ending

Sunflower seeds Aug 11 2025 11:59 am Watched the show 'cause I love Lee Soo Hyuk oppa. He really deserves a solid main lead. This drama is so weird and ending gave me creeps. No offense but this drama wasn't upto the expectation.

Shin Aug 10 2025 7:45 am Episodes 1 to 5 - 10/10 Episode 6 - What The Hell Did I Just Watch?!

Perfect example of the when the ending of a movie/show ruins the entire experience I thought it was just me but 90% of the reviews on IMDb say the exact same thing Watch at your own risk

Mild spoilers ahead:

Q1: why did the demon do all that? I know she’s a demon but what was the end game? Chaos for the sake of chaos? Q2: what happened to Kim Hye-young? (the bully) Q3: assuming it was no accident (it would be a huge coincidence if it was), why did the demon kill Yoo Joon-sun? (Her “boyfriend”) Q4: why did the demon wait until she was 17 to realize her plan? Seems kinda arbitrary

Just an observation: the helmets are a silly touch, as if there aren’t any people who would see you put it on/take it off…

Nony Jul 29 2025 8:45 am Oh wow its something… the last ep was questionable?? But i read the comments that said the drama is a prequel to the webtoon. As in they explain on how the s line was introduced in the webtoon. I just felt that some scenes weren’t necessary. But okay?

Jojo Jul 27 2025 4:00 am Woah so this is the prequel of the original S Line webtoon! I think the ending might be confusing for people who didn't read the webtoon. In the webtoon, the S Line suddenly appears on the first episode. People were flustered. They wear helmets to hide their face because they are embarassed of their visible S Lines. Not showing the top of the heads of news anchors on the television become the norm, to protect their privacy.

I think 1-5 were so good. Episode 6 is also good, but I didn't expect the genre would suddenly switched to a full fantasy. I wish they had more bridging to prepare us for this, for example like hinting us about the homeroom teacher's mystery. I wish it has 7 or 8 episodes.

Overall I enjoy watching this!

Ideamachine Jul 26 2025 11:21 am It's amazing that SK writers have infinite ideas Who would have thought red line above the head and body count as an idea?

April Jul 25 2025 11:10 pm And I'm back after the finale. S-Line cemetery scene made me realize how Suzy and Arin look like each other. She's prettier without makeup.

Of course, the last episode followed the original plot of the webtoon, so the drama is like a prequel to the webtoon. It's a bit chaotic, but it really had a potential, 6 episodes is really not enough.

I've been watching Lee Soo Hyuk for years, but I think this is the first time to see him cry that much, and to see him defeated made me realize he's really more than his pretty face. Great acting everyone!

Disappointed Jul 25 2025 6:02 pm I was really interested in watching this kdrama until I saw what happened with Sun A. I can tolerate most terrible things but situations like hers make me really uncomfortable

d Jul 25 2025 12:07 pm do you know the "seo hanyu" actor's name?

Anonymous Jul 25 2025 10:05 am The ending doesnt make any sense lmao worst plot twist ever! 4/10. The beginning was good tho.

Ashley Jul 25 2025 8:52 am

SPOILER!!!!!*

Whatever happened to the bully that was with the teacher? He died in the car, but I don’t remember anything about her.

kdrummer Jul 25 2025 8:29 am SA'd, yes. I guess that was what I meant. And I hate that my theory is right.

James Jul 24 2025 10:40 am I think Kang Sun A might have been SA'd as a child.

A minor can't be an adult's "lover".

kdrummer Jul 23 2025 9:31 am Theories: Kang Sun-A's lover is her father. Yoo Joon-Sun is in cohorts with Lee Kyu-Jin. Someone is someone's mother... or some dumb twist like that. I don't know what the point of the story is yet, but my guess is that it's an extreme commentary of the hook-up culture.

Watermelon Jul 23 2025 8:39 am Why only 6 episodes

jeana Jul 22 2025 12:40 am i thought language teacher already died in his car (suicide??) why in ep 4 they said he is missing?

Luna M Jul 20 2025 7:50 am hi can someone explain to me the ending of eps3? so is it true that jungwoo’s sister is actually the mistress? or she just said that because her husband chose that woman?

Bea Jul 20 2025 7:34 am Lee Soo Hyuk is freaking gorgeous here, he reminds me of seventeen Jeonghan. Another male actor added to my crush list lol. Guys with androgenous beauty are really my style.

Also, congrats to Arin! Her first main role big project as an actress!

AMAN Jul 19 2025 2:31 am Dammm.... the twist in the ep03 was quit unpredictable. i like the idea that they have one different story line going along with the main story.. very unique concept

AMAN Jul 18 2025 9:38 pm that actress Lee Eun-Saem (Kang Sun-A) is either being pushed from the building or watching someone being pushed from the building since her last 3 dramas...

Justitia Jul 18 2025 3:46 pm Always here to support My Queen Lee Da Hee ! Villian or not always gonna support her roles and the Lee Couple is so sexy together. Although if they are ending together or not, fans are ready happy to see them both cast together !

April Jul 18 2025 12:45 pm This drama have 6 episodes, but I'm so intrigued I've search for spoiler only to get none which is good. So they actually deviate from the original plot. This is actually a good idea, on the webtoon, there's no glasses and everyone can actually see the red lines, not innate like Arin, but mysteriously appeared and gone all at once.

So I really have no choice but to wait for episodes 5 and 6 hehe minus the s*x part, it's really a promising story. The production might be punching in the air now for making it 6 episodes only.

Ashley Jul 18 2025 8:48 am So far, I find this drama boring and it lags. However, episode three was interesting. Personally, I feel like Koreans are just too nosy and always trying to be in other’s business. Who cares about who’s sleeping with who. Honestly, this drama has everything I can’t stand about Korean culture, which makes this very hard to watch. The hive mind / conformist mindset, the attempted murder disguised as “bullying”, the unnecessary hierarchy, and the idiot police upper management who are completely incompetent.

TTO Jul 17 2025 1:41 am I feel has something to do with those glasses.

AMAN Jul 17 2025 12:14 am Lee Kyu-Jin character seems fishy to me.. i feel she has something to do with those glasses..

Marga Manuel Jul 16 2025 1:06 am Super duper highly recommended! This first 2 episode will give you really an intense feelings and the story line was very interesting! Must watch this...

Gee Jul 15 2025 9:35 pm I recommend watching this drama. The plot is different from the others. In my opinion, maybe the teacher is the mastermind, maybe she can also see the line.

Molly Dash Jul 15 2025 9:36 am A Must See Drama !!!

Paula Jul 14 2025 3:06 pm The drama has an unusual, strange approach to skills, but also an interesting plot. I'll be watching until the end and hoping for a second season. The drama's flaw is Kang Sun-A, who's an irritating character. Her uncle helps her and raises her, and it pisses her off? Sure, her classmates are mean, but they're known to be bad people. Kang Sun-A, on the other hand, is supposedly a positive character and a victim, but she's annoying.

miho9 Jul 14 2025 1:33 pm I actually watching this right now ep2 so exciting more s life who with detective charr !

pinkonmonsta Jul 14 2025 9:06 am I thought Arin was Roh Jeong Eui at first... looks so similar

player 457 Jul 13 2025 1:09 am Bruh I watched this without looking at synopsis, I was shocked at the intro but the first 2 episodes were interesting. Highly recommended

M Jul 12 2025 5:07 am Arin kinda looks like Suzy here.

leon Jul 11 2025 3:46 pm Just finished watching the first two episodes. I am glad I didn't have to wait 2 years to watch this.. hope people below me and the one who waited for that long know this just released today :)

thrillme Jun 08 2025 11:02 am definitely seems like it was tossed.

Lily Apr 03 2025 7:30 pm This series was selected as 1 of 8 series competing in the pink carpet cannes series on april 27th.

World Broadcast on april 27th 11:00 - 12:35 | Grand Auditorium Louis Lumière. Cannes. French.

Congratulation lee soo hyuk,Arin n lee da hee!

wifey Jan 10 2025 6:18 pm i dont think it coming out in 2025 either but i'll be glad to wait for it

Cha eunwoo wife Dec 16 2024 3:15 pm When is this cooking out I have been waiting

Sunshine Oct 09 2024 4:18 pm I've been waiting for this drama. When is it coming out?

Jjo Sep 04 2024 1:49 pm When is this coming out.? Been waiting for so long

Fehintolu Aug 30 2024 1:54 pm Finally!! Lee Soo hyuk as ML

Cloria Aug 08 2024 12:37 pm I loved arin's acting in alchemy of souls. She definitely deserves more recognition for her acting. I am really excited for the drama. ?

Me Jul 31 2024 10:50 pm cant waittt... both of lead are my fav

Jew Jun 18 2024 2:22 am OMG! Lee Soo-hyuk as ML? finally!

cherry May 07 2024 2:49 am we're still waiting T-T actress arin <33

fan Mar 13 2024 6:08 am the cast!! please start filming TuT

Adel2u Feb 25 2024 7:28 pm lee dahee × lee soo hyuk ? love the lead !! i can't wait,hopefully they didn't cancel this drama

GengGeng!!! Oct 05 2023 9:51 am Hope they won't cancel this one. I also hope it will air ASAP maybe around late 2024 or early 2025.

Kiki Oct 03 2023 8:59 pm What. Probably make more sense when the trailer is release.

Hts Sep 29 2023 7:29 am Finally Lee Soo Hyuk as Lead Role !!

Myles Sep 20 2023 12:13 am spicyyy

Adia Sep 11 2023 12:32 am Wow the plot and the casts are so hott!!! I wonder what station will broadcast this hot drama!!!

@@ Line 39: / Line 39: @@
 ===Bangju Police===
-{{CastPictures1
+{{CastPictures3
 |1picture=File:S Line-Kim Dong-Young.jpg
 |1name=Kim Dong-Young (1988){{!}}Kim Dong-Young
 |1charactername=Oh Dong-Sik
+|2picture=File:S Line-Jung Hyung-Suk.jpg
+|2name=Jung Hyung-Suk (actor){{!}}Jung Hyung-Suk
+|2charactername=team leader
+|3picture=File:S Line-Sung-Ryung.jpg
+|3name=Sung-Lyoung (1991){{!}}Sung-Lyoung
+|3charactername=Kang Soo-Min
 }}
@@ Line 136: / Line 142: @@
 |2name=Jeong Jae-Kwang
 |2charactername=bartender (ep.2)
-|3picture=File:S Line-Jeong Jae-Kwang1.jpg
+|3picture=File:S Line-Shin Dong-Mi.jpg
 |3name=Shin Dong-Mi
 |3charactername=police station woman (ep.4)
@@ Line 143: / Line 149: @@
 * [[Lee Han-Joo (2001)|Lee Han-Joo]] - Ji-Na
 * [[Hong Suk-Bin (1967)|Hong Suk-Bin]] - Han Hyo-San
-* [[Sung-Ryung (1991)|Sung-Ryung]] - Soo-Min
 * [[Byun Joo-Woo (actress)|Byun Joo-Woo]] - nursing home staff (ep.1)
 * [[Yun Ki-Chang (1981)|Yun Ki-Chang]] - PE teacher (ep.2)
+* [[Lee Bo-Ram (1985)|Lee Bo-Ram]] - cult member
 ==Trailers==

Difference between revisions of "S Line"

Latest revision as of 16:22, 14 March 2026

Contents

User Rating

Profile

Plot Synopsis by AsianWiki Staff ©

Notes

Cast

Bangju Police

Bangju High School

Wansung Villa Apartments

Shin Hyun-Heup's Family

Jung-Woo's Group

Music Teacher's Group

Others

Trailers

Comments

Leave a Comment

Comments