Friend: The Great Legacy

Joon-seok is sent to prison for his involvement in Dong-soo's death. He meets Dong-soo's son in prison, keeps his identity a secret, and agrees to join forces when he is released. All of their plans fall apart when Sung-hoon finds out the truth.

• 
  Kwak Kyung-taek

• 
  Yu Oh-seong
  Joon-seok
• 
  Ju Jin-mo
  Lee Chul-joo
• 
  Kim Woo-bin
  Choi Sung-hoon
• 
  Jang Young-nam
  Hye-ji
• 
  Jung Ho-bin
  Eun-ki
• 
  Ki Joo-bong
  Hyung-doo
• 
  Lee Cheol-min
  Joon-seok's Subordinate
• 
  Lee Jun-hyeok
  Joon-seok's Subordinate
• 
  Hwang Sung-joon
  Earring
• 
  Kang Hanna
  Ah-ram
• 
  Kang Han-na
  Ah-ram
• 
  Jo Min-jun
  Eun-ki's Right-hand Man
• 
  Ju Seok-tae
  Stepfather
• 
  Choi Jeong-hyun
  Sang-min
• 
  Lee Kyu-ho
  Tteok-dae
• 
  Song Ji-ho
  Jae-chil
• 
  Park Sung-hyun
  Young Sang-gon
• 
  Jeong Soo-kyo
  Hae-young
• 
  Kim In-chul
  YTN News Reporter
• 
  Go Woo-rim
  Young Choi Sung-hoon
• 
  Lee Sang-hun
  Choo-jeob