김재원

Choi Kwan-woo

김하늘

Kim Chae-won

한혜진

Yoon Ji-Soo

Kim Yu-mi

Choi Yun-Hee

고명환

Kim Bong-Gyun

박원숙

President Yoon Mi-Hee

Kim Hae-sook

Kwan Woo's mother

Moon Ji-yoon

Choi Jang-Bi

김용건

Chairman Lee Young-Kyu

Lee Min-ho

Troubled student