Lee Joo-young

as Soo-in

Lee Jun-hyuk

as Jin-tae

Yeom Hye-ran

as Hae-sook

Song Young-gyu

as Gui-nam

Kwak Dong-yeon

as Jung-ho

Joo Hae-eun

as Bang-geul

You Chea-myung

as Team Head Kim

Jang Jun-whee

as Team Leader

Kim Min-seo

as Young Soo-in

Lee Sang-hee

as Principal

Lim Ho-jun

as Teacher

Kim Jong-soo

as Coach Park

Lee Chae-eun

as Teacher Kim

Seo Jin-won

as High School Baseball Team Member

Oh Jun-hyeok

Hong Sang-pyo

as Indie director

Kim Hee-su

as High School Baseball Team Member