A Bittersweet Life

Kim Sun-woo is an enforcer and manager for a hotel owned by a cold, calculative crime boss, Kang who assigns Sun-woo to a simple errand while he is away on a business trip; to shadow his young mistress, Hee-soo, for fear that she may be cheating on him with a younger man with the mandate that he must kill them both if he discovers their affair.

• 
  Lee Byung-hun

  Sun-woo
• 
  Kim Yeong-cheol

  Mr. Kang
• 
  Shin Min-a

  Hee-soo
• 
  Kim Roi-ha

  Moon-seok
• 
  Lee Ki-young

  Oh Moo-seong
• 
  Hwang Jung-min

  Mr. Baek
• 
  Eric Mun

  Tae-goo
• 
  Oh Dal-su

  Myeong-goo
• 
  Kim Hae-gon

  Tae-woong
• 
  Kim Han

  Se-yoon