Lee Yu-ri

Chae-ri

Gong Yoo

Joon

Shoo

Soo-young

Jung Sung-yoon

Tae-hyun

Moon Ji-yoon

Sang-hyuk

Lim Seong-eon

Min-hee

Jo Dal-hwan

Seok-goo

Kim Yong-geon

Sang-hyuk's Father

Lee Mi-young

Sang-hyuk's Mother

Kim Ji-woo

Song-yi

Yoo Seo-jin

Professor