Yi Heon Warns Dong Soo

Cast

• 

  Yoon Chan-young

  Yi-heon/Kim Deuk-pal

• 

  Bong Jae-hyun

  Choi Se-kyung

• 

  Won Tae-min

  Kim Dong-soo

• 

  Lee Seo-jin

  Kim Deuk-pal

• 

  Seo Tae-hwa

  Choi Myung-hyun

• 

  Kim Se-won

  Kim Yeon-ji

• 

  Joo Yoon-chan

  Hong Jae-min

• 

  Lee Kyung-young

  The Boss

• 

  Shin Min-jae

  Mathematics Lecturer

• 

  Lee Hee-jin

  Song Min-seo

• 

  Ko Dong-ok

  Jong Cheol

• 

  Choi Ji-hye

  Min-ji