Drama: Mercy for None
Country: South Korea
Episodes: 7
Aired: Jun 6, 2025
Aired On: Friday
Duration: 42 min.
Genres: Action, Mystery, Crime, Drama
Synopsis
Nam Gi Jun, once a fierce member of the notorious Bongsan Gang, walked away from gang life to protect his younger brother Gi Seok, who joined their rival, Joowoon Gang. To prove his resolve, he crippled himself, vowing never to return. Years later, he lives a quiet life, running a drink supply business tied to Bongsan’s territory. But everything changes when his brother is found dead under suspicious circumstances.
Haunted by guilt and driven by revenge, Gi Jun reenters the violent underworld he once ruled. As he navigates shifting loyalties, hidden betrayals, and old vendettas, he must uncover the truth about his brother’s death—even if it means facing the ghosts of his brutal past.
Cast
Main Roles
- So Ji Sub as Nam Gi Jun
- Huh Joon Ho as Lee Ju Un
- Ahn Kil Kang as Koo Bong San
- Lee Bum Soo as Sim Seong Won
- Gong Myung as Koo Jun Mo
- Choo Young Woo as Lee Geum Son
- Jo Han Chul as Choi Seong Cheol
Support Roles
- Ahn Se Ho as Kim Chun Seok [Bongsan’s chief]
- Jung Gun Joo as Cheon Hae Beom [Juwoon Group]
- Eom Joon Ki as Jung Hui Chan [N Clean employee]
- Kang Shin Hyo as Hong Hyeon Seok [Bongsan’s representative]
- Lee Dong Ha as Lee Dong Gyeong
- Park Min I as Yang Sik
- Kim Hak Seon as Han Seok Yun [Police officer]
- Im Hyung Guk as Choi Byeong Ho
Guest Roles
- Nam Yeon Woo as Manager Cha (Ep. 1)
- Park Jung Hak as Yakuza boss (Ep. 1)
- Lee Sang Hee as Lawyer Yun (Ep. 2)
- An Tae Gyeong as Prosecutor (Ep. 2)
- Ryoo Ji Hoon as Prosecutor (Ep. 2)
- Son Seung Taek as Prosecutor (Ep. 2)
- Yoon Soo Hyuk as Prosecutor (Ep. 2)
- Choi Geon as Hotel guest (Ep. 2)
- Kim Su Kyung as Graveyard manager (Ep. 2)
- Kim Jin Ok as Graveyard staff (Ep. 2)
- Lee Dong Gi as N Clean employee (Ep. 2)
- Seo Mun Ho as Motorcycle deliveryman (Ep. 2)
- Ham Sang Hoon as N Clean employee (Ep. 2)
- Cho Jung Keun as Chairman O (Ep. 3)
- Lee Jong Shin as Pastor (Ep. 3)
- Don Mills as Hyeong Jin [Fighter] (Ep. 4)
- Ahn Sung Bong as Security team chief (Ep. 4)
- Song Yo Sep as Senior Director Park (Ep. 5)
- Choi Bum Ho as Advisor Sin (Ep. 5)
- Choi Hee Do as Emergency responder (Ep. 5)
- Kim Won Joong as Detective (Ep. 6)
- Jeong Hee Tae as Sang Seok (Ep. 7)
- Kim Min Kwang as Anchorman (Ep. 7)
- Seo Kwang Jae as Prosecutor general (Ep. 7)
- Cha Seung Won as Cha Yeong Do / Teacher Kim
- Gu Sung Hwan as Dae Gwang Su [Detective]
- Heo Ji Won as Prosecutor Choi
- Lee Jae Yoon as Kaneyama [Contract killer]
- Lee Jun Hyuk as Nam Gi Seok [Gi Jun’s younger brother]
- Lee Hyeon Gyu as Hui Chan’s friend
- Nam Sang Woo as Hui Chan’s friend
- Kang Hee Se as Jun Mo’s bodyguard
- Kim Woo Dam as Jun Mo’s bodyguard
- Jung Min Sung as Deputy chief prosecutor
- Ji Yi Soo as N Clean’s receptionist
- Joo Young Ho as Investigator
- Lee Gi Young as Doctor
- Kim Min Soo as Gang member
Final Thoughts
**Mercy for None** is a gripping noir thriller that plunges deep into the South Korean underworld. With a gritty atmosphere, complex characters, and raw action, it delivers an emotional yet suspense-filled journey of vengeance and redemption. So Ji Sub leads a stellar cast in this compact yet powerful crime drama that never pulls its punches.
Time remaining:
25s
