• 
  Sang-Yeob Lee

   (2017)
• 
  Jin-joo Park

   (2017)
• 
  Ko Sung-Hee

   (2017) (as Ko Sung-Hee)
• 
  Jae-ha Sin

   (2017)
• 
  Hae-In Jung

   (2017)
• 
  Suzy Bae

   (2017)
• 
  Jong-Suk Lee

  Jung Jae-Chan (2017)
• 
  Gi-yeong Lee

  24 episodes, 2017

• 
  Hae-Sun Bae

  24 episodes, 2017
• 
  Sung-wuk Min

  26 episodes, 2017
• 
  Won-hae Kim

  32 episodes, 2017
• 
  Da-Reum Nam

  14 episodes, 2017
• 
  Hwang Young Hee

  32 episodes, 2017
• 
  Eui-Sik Oh

  24 episodes, 2017
• 
  Ye-jin Pyo

  18 episodes, 2017

• 
  Yoo Joon Lee

  Oh Kyung Han
• 
  So-hyun Kim

  Park So Yoon
• 
  Hyo-Seob Eom

  So Yoon's father
• 
  So-yeon Jang

  So Yoon's mother
• 
  Bae Hae-sun

  Son Woo Joo