• 
  Im Ji-Hyun

   So-Ra
• 
  So-yeon Lee

   Jang Dal-rae (unknown episodes)
• 
  Chong-ok Bae

  Choi Go-soon
• 
  Ro-Woon Choi

  Joo Hong
• 
  Won-hong Choi

  Yoo Joon-sung (young)
• 
  Ho-jin Chun

  Yoo Jung-han
• 
  Dong-mi Shin

  Yeo-ok
• 
  Gyu-su Jeong

  Mr. Kang

• 
  Hae-mi Park

  Pyung Beom-sook
• 
  Hyo-Seob Eom

  Jang Gook's father
• 
  Su-Won Ji

  Kim Young-hee
• 
  Chan Jung

  Heo Se-min
• 
  Shi-hoo Kim

  Yoo Joon-sung
• 
  Yeong-ran Kim

  Yeo Sam-sook
• 
  Han-wi Lee

  Joo Chul-soo

• 
  Tae-im Lee

  Joo Da-hae
• 
  Lee Won Gun

  Yoo Joon-soo (young)
• 
  Gung-Min Nam

  Yoo Joon-soo
• 
  Seung-yoon Oh

  Jang Hoon