Jeon Do-yeon
Yun Hong-yeon
Lee Byung-hun
Kang Soo-ha
Lee Mi-yeon
Yang Eun-Hee
Song Ok-suk
Yun Hong-yeon's mother
Kim Jae-in
Nan-hee
Seo Hye-rin
Teacher Yu
Lee Dae-yeon
Teacher Jo (uncredited)
Kim Seon-hwa
Bum-soo's Mother (uncredited)
Park Kwang-jin
Kim Joo's Grandfather (uncredited)
Lee In
Soon-cheol (uncredited)
Lee Young-hoo
Bookstore Owner (uncredited)