The highly anticipated action and drama web series, “Mercy For None Season 1,” is now available on OTT platforms, having released on June 6, 2025. This project showcases the talents of director Choi Sung-eun and writer Yoo Ki-seong, and represents a significant collaboration between production houses Yong Film and Studio N. The complete series runs for 4 hours and 58 minutes.
Mercy For None Season 1 Overviews

Series Name | Mercy For None Season 1 Web Series |
Original Language | Korean |
Spoken Language | – |
Digital Release Date | 06 June 2025 |
Runtime | 4 hour and 58 minutes |
Country | South Korea |
Genres | Action Drama |
Director | Choi Sung-eun |
Producer | Yong film, Studio N |
Season | 01 |
Total Episodes | 07 |
Mercy For None Season 1 Screenshots



Mercy For None Season 1 Star Cast
Actor | Character |
So Ji-sub | Nam Gi-joon |
Huh Joon-ho | Lee Joo-woon |
Lee Beom-su | Sim Seong-won |
Gong Myoung | Joon-mo |
Choo Young-woo | Lee Geum-son |
Lee Jun-hyuk | Nam Gi-seok |
Mercy For None Season 1 Trailer
Mercy For None Season 1 Review
The story is straightforward—Gi-seok’s suspicious death sparks Gi-jun’s blood-soaked quest for vengeance. Set in a tense criminal landscape, the narrative hinges on the shattered truce between two rival gangs, Ju-woon and Bong-san, after Gu Jun-mo (Gong Myung), the volatile son of Bong-san’s leader, orders Gi-seok’s murder. While the premise isn’t groundbreaking, the show’s dark atmosphere and pacing keep the tension high.
So Ji-sub delivers a commanding performance as Gi-jun, channeling his signature stoic intensity (Doctor Lawyer, A Company Man). His cold, grief-fueled cruelty makes Gi-jun both compelling and terrifying—anyone tied to Gi-seok’s death is either dead or broken. Gong Myung is a revelation as Gu Jun-mo, shedding his usual soft romantic roles for a menacing, unpredictable antagonist whose violent outbursts steal scenes. Supporting performances, like Lee Joon-hyuk’s brief but impactful role as Gi-seok, add emotional weight.
The show excels in its raw action sequences and character-driven drama. The fight choreography is visceral, and So Ji-sub’s portrayal of restrained rage anchors the series. Gong Myung’s transformation into a chilling villain is a standout, proving his range. The underworld setting feels authentic, with cinematography emphasizing its grime and danger.