When This Summer is Over

Lee Jae-joon

as

Ki-jun

Choi Hyeon-jin

as

Young-mun

Choi Woo-rok

as

Young-jun

Jeong Jun

as

Seok-ho

Go Seo-hee

as

Ki-jun's Mother

Lee Hyun-kyun

as

Ki-jun's Father

Kang Gil-woo

as

Teacher