• 
  Shi-Kang Lee

  Sang Soo
• 
  Ro-Woon Choi

   Prince (2017) (unknown episodes)
• 
  Woong-in Jeong

   Jung Ki-joon (31 episodes, 2017)
• 
  Se-ah Yun

   Queen Park (26 episodes, 2017)
• 
  Da-bin Jung

   Gyeon Hee (28 episodes, 2017)
• 
  Won Joo

   Gyun-Woo (32 episodes, 2017)
• 
  Woori

   Jung Da-yeon (25 episodes, 2017)
• 
  Yeon-Seo Oh

   Princess Hyemyung (32 episodes, 2017)

• 
  Jung Shin Lee

   Kang Joon-Young (31 episodes, 2017)
• 
  Young-nam Jang

  Gyun-Woo's mother
• 
  Byeong-ok Kim

  Park Sun-jae (2017)
• 
  Hie-bong Jo

  Gyeon Pil-yeong (2017)
• 
  Dam Ryu

  Young-shin (2017)
• 
  Seo Eun-Aa

  Mal-geum (2017)
• 
  Hyeong-tak Shin

  Choon-poong (2017)

• 
  Si-eon Lee

  Bang Se-ho (2017)
• 
  Chang-min Son

  King Wheejong (2017)
• 
  Jung-Hwan Sul

  Maeng Kwang-soo (2017)
• 
  Tae-mi

  Byul-yi (2017)