Jang Jin-young

as Min Hie-jae

Park Hae-il

as Seo In-ha

Song Seon-mi

as Choi Jeong-rae

Kim Yu-seok

as Kang Seong-ho

Ahn Nae-sang

as Mr. Park

Byun Hee-bong

as Bookstore Owner

Kim Hae-sook

as In-ha's Mother

Lee Sun-kyun

as Doctor Shin