• 
  Chang-wan Kim

   Hong Gae Sik (17 episodes, 2007)
• 
  Han-wi Lee

   Mr. Ku (17 episodes, 2007)
• 
  Yeong-ok Kim

   Han Kyul's Grandmother (17 episodes, 2007)
• 
  Won-suk Park

   Eun Chan's Mom (17 episodes, 2007)
• 
  Dong-wook Kim

   Jin Ha Rim (17 episodes, 2007)
• 
  Il-hwa Choi

   Han Kyul's Father (17 episodes, 2007)
• 
  Ja-ok Kim

   Han Kyul's Mother (17 episodes, 2007)
• 
  Sun-kyun Lee

  Choi Han Sung

• 
  Jeong-an Chae

  Han Yoo Joo
• 
  Yoo Gong

  Choi Han Kyul
• 
  Eun-hye Yun

  Go Eun Chan
• 
  Seung-bi Lee

  (10 episodes, 2007)
• 
  Jae-wook Kim

   No Sun Ki (17 episodes, 2007)
• 
  Eon Lee

   Hwang Min Yeop (17 episodes, 2007)
• 
  Yeh-in Han

   Go Eun Sae (17 episodes, 2007)