Officer Black Belt

A talented martial artist who can't walk past a person in need unites with a probation officer to fight and prevent crime as a martial arts officer.

• 
  Kim Woo-bin

  Lee Jung-do
• 
  Kim Sung-kyun

  Kim Sun-min
• 
  Lee Hyun-gul

  Kang Ki-jung
• 
  Park Ji-yeol

  Cho Min-jo
• 
  Lee Jung-ok

  Han Byung-soon
• 
  Kim Yo-han

  Moisture
• 
  Kang Hyung-suk

  Writer K
• 
  Lee Hae-yeong

  Lee Sang-woo
• 
  Kim Ji-young

  Ha Sun-jung
• 
  Kang Seung-ho

  Kim Min-wook