• 
  Il-Joo Ji

   Jo Tae-kwon
• 
  Jae-yoon Lee

   Jung Jae-yi
• 
  Jo Soo-Hyang

   Soo-bin
• 
  Kyung Soo-jin

   Song Shi-ho
• 
  Hye-Jung Cho

   Jung Nan-hee
• 
  Song-Kyoung Lee

   Kim Bok-joo
• 
  Eui-Sik Oh

   Bang Woon-ki
• 
  Joo-Hyuk Nam

   Joon-hyung

• 
  Kil-Kang Ahn

  (16 episodes, 2016-2017)
• 
  Ki-Young Kang

  (16 episodes, 2016-2017)
• 
  In-gi Jeong

   Joon Hyung's uncle
• 
  Da-in Yoo

   Go Ah Young
• 
  Moo-Seong Choi

   Coach Yoon Deok Man
• 
  Jung Eun Lee

   Joon Hyung's aunt
• 
  Joo-Young Lee

   Lee Sun Ok

• 
  Jae Hyun Kim

  Kim Jae Hyeon
• 
  Yu-seon Yun

  Joon Hyung's mother
• 
  Hye-ran Ji

  Song Shi Eon