Director
Yun-su Chong
DIRECTOR
Stars (in credits order)
Tae-Hyun Cha
Kim Soo-ho
Song Hye-Kyo
Bae So-eun
Chang-ui Song
Park Jong-gu
Moon Jeong-Hee
Soon-im
Sang-Jeon Woo
No Seonsaengnim
Kim Yoon-seok
Biology Teacher
Kim Hae-sook
Soo-ho's mother
Ju-hyeon Ok
So-eun's school friendvoice
Oh Jung-Won
Bae So-Eun's mother