Jang Jin-young as Min Hie-jae

Park Hae-il as Seo In-ha

Song Sun-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

Kim Young-jae as Roots of Writing Member

Jeon Su-ah as Roots of Writing Member

Sung Chang-hoon as Roots of Writing Member

Choi Sung-ho as Roots of Writing Member

Kim Kyung-sik as Pregnant Woman's Husband