• 
  Se-yeong Lee

   Han Gyeo-wool
• 
  Cheong-a Lee

   Yo-na
• 
  Joon Lee

   Yoon San
• 
  Jeong-se Oh

   Yong Goo-hyung
• 
  Yun-hea Kim

   Jung Yool-jin
• 
  Bok-rae Jo

   Kang Tae-woo
• 
  Jo Bok-rae

   Kang Tae-woo
• 
  Hyun-kyoon Lee

   Han Gyoo-min (1 episode, 2016)

• 
  Jin-hee Kim

   Se-ra (1 episode, 2016)
• 
  Se-ha Ahn

   Detective Park (1 episode, 2016)
• 
  Yun-hye Kim

   Jung Yool-jin (1 episode, 2016)
• 
  Ki-moo Kim

   Doctor Hwang (1 episode, 2016)
• 
  Soo-yun Han

   Yeon Joo (1 episode, 2016)
• 
  Hyeok-soo Kwon

  Dr. Hwang's father
• 
  Kim Yoon-hye

  Jung Yoo-Jin