• 
  Ye-ri Kim

   Yoon Jin-Myung
• 
  Eun-bin Park

   Song Ji-Won
• 
  Seung-Yeon Han

   Jung Ye-Eun
• 
  Hwa-young Ryu

   Kang Yi-Na
• 
  Park Hye-soo

   Yoo Eun-Jae
• 
  Daniel Joey Albright

   Samuel Johnson (1 episode, 2016)
• 
  Il-Joo Ji

   Ko Doo-Young (7 episodes, 2016)
• 
  Ji Woo

   Yoo Eun-Jae (14 episodes, 2017)

• 
  Min Suk Kim

   Seo Jang-Hoon (12 episodes, 2017)
• 
  Lee You-Jin

   Kwon Ho-chang (11 episodes, 2017)
• 
  Ara Choi

   Jo Eun (14 episodes, 2017)
• 
  Ah Ra Choi

  14 episodes, 2017
• 
  Yoon Park

  14 episodes, 2016-2017
• 
  Kim Min Seok

  14 episodes, 2017
• 
  Seung-Won Son

  12 episodes, 2016

• 
  Yoon Park

  Park Jae Wan
• 
  Kong Sang-Ah

  Han Gwan-Young's Daughter
• 
  Hyun-soo Shin

  Yoon Jong-Yeol
• 
  Lee Ji-Ha

  Ho Chang's mother
• 
  Suk Mun

  Belle Epoque landlady
• 
  Moon-cheol Nam

  Ji Won's father