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S Line Episode 5-6 OTT Release Date: S Line is a captivating South Korean dark fantasy crime thriller series that premiered on Wavve on July 11, 2025. This intriguing drama is based on a popular Naver webtoon and explores a world where mysterious red lines, known as S Lines, suddenly appear above people's heads, connecting those who have had sexual relationships. These glowing lines expose hidden secrets, create chaos in society and lead to shocking events. Here is when and where you can watch the final episodes of S Line:

S Line Plot

The story of S Line follows three main characters: Han Ji Wook, a free-spirited detective investigating the truth behind the S Lines, played by Lee Soo Hyuk; Kyu Jin, a high school teacher with a mysterious past, portrayed by Lee Da Hee; and Shin Hyun Heup, a girl born with the ability to see these lines, played by Arin. As the series unfolds, special glasses that reveal the S Lines start circulating, leading to dangerous consequences, including murders and blackmail.

S Line Episode 5-6 OTT Release Date

The 5th and 6th episode of S Line will premiere on Wavve on Friday July 25 at approximately 8am (GMT) / 3am (ET).

Each episode is expected to be around 50 minutes long.

S Line Episode 3-4 Preview

The K-drama S Line follows Sin Hyeon Hop (Arin), a high school student who gains access to special glasses revealing red lines above people's heads, indicating their number of sexual partners. Initially using this power to help others, things take a dark turn when another student misuses similar glasses to blackmail a teacher involved in an illicit relationship.

S Line Episode 5-6: What To Expect?

In the finale, Ji Wook tackles a highly sensitive rape case. The victim, terrified and unwilling to speak out, denies any abuse. But the mysterious glasses reveal a red line above her head, hinting at hidden trauma.

As Ji Wook follows the line to uncover the truth, suspicion shifts toward homeroom teacher Lee Gyu Jin (Lee Da Hee). At the same time, he digs deeper into the origins of the glasses and their eerie power.

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A chilling twist unfolds when a male teacher also gains possession of the glasses—raising fears of them being misused for darker intentions.

With each step, Ji Wook inches closer to uncovering his niece’s killer. The finale promises a tense, emotionally charged showdown filled with moral dilemmas and shocking revelations.