The Merciless

Jae-ho, who aims to become the number one in a crime organization, gets to build up trust with Hyun-su, an ambitious newbie in prison. When they try to take over the organization after their release, their ulterior motives start to emerge.

• 
  Sul Kyung-gu

  Han Jae-ho
• 
  Yim Si-wan

  Jo Hyun-su
• 
  Kim Hie-won

  Byung-gab
• 
  Jeon Hye-jin

  In-sook
• 
  Lee Kyung-young

  Byung-chul
• 
  Moon Ji-yoon

  Young-geun
• 
  Jang In-sub

  Min-chul
• 
  Kim Ji-hoon

  Jung-sik
• 
  Kim Seung-oh

  Seung-pil
• 
  Jin Sun-kyu

  Prison Chief Security Officer