Mercy for None (2025) is a seven-episode South Korean noir action series based on the webtoon Plaza Wars. Nam Gi-jun (So Ji-sub), a former gangster who severed his Achilles tendon to leave Seoul’s underworld, returns after 11 years when his brother, Nam Gi-seok (Lee Jun-hyuk), is murdered. Armed with a baseball bat, Gi-jun seeks vengeance against the rival Bongsan and Juwoon gangs, uncovering a web of betrayal involving crime lords and a corrupt prosecutor.

Genre: Action, Crime, Thriller, Noir

Publishers: Netflix (Streaming, June 6, 2025)

Main Characters:

  1. Nam Gi-jun (So Ji-sub): Ex-gangster, relentless avenger.

  2. Nam Gi-seok (Lee Jun-hyuk): Gi-jun’s brother, killed Juwoon executive.

  3. Lee Ju-woon (Huh Joon-ho): Juwoon Group leader, Gi-jun’s former boss.

  4. Gu Bong-san (Ahn Kil-kang): Bongsan Group leader, rival kingpin.

  5. Gu Jun-mo (Gong Myoung): Bong-san’s chaotic son, Gi-seok’s killer.

  6. Lee Geum-son (Choo Young-woo): Corrupt prosecutor, hidden mastermind.

  7. Sim Seong-won (Lee Beom-su): Murder cleanup expert, NClean CEO.

Mercy for None, Netflix’s gritty K-drama, dropped June 6, 2025, and has fans buzzing with its relentless action and noir vibes. Directed by Choi Sung-eun, the series stars So Ji-sub as Nam Gi-jun, a brooding ex-gangster on a bloody revenge quest after his brother’s murder. Its stellar fight choreography, like the brutal “Death Hallway” scene with over 100 kills, draws John Wick comparisons, earning a 100% Tomatometer and 91% Popcornmeter on Rotten Tomatoes. Critics praise So Ji-sub’s magnetic performance but note a convoluted plot and weak final villain, giving it a 3.5/5 average. Filmed in Seoul, the show’s high production values and twist-heavy story keep viewers hooked, though some on X call the second half repetitive. Stream all seven episodes on Netflix for a visceral, action-packed ride.