Ryu Deok-hwan

Nam-woo (voice)

Gong Hyung-jin

Jun-ho (voice)

Ahn Sung-ki

Kyung-min (voice)

Bae Jong-ok

Nam-woo's Mother (voice)

Na Moon-hee

Nam-woo's Grandmother (voice)

Jang Hang-seon

Jun-ho's Father (voice)

Lee Byung-hun

Adult Nam-woo (voice)

Lee Seok-jun

Office Colleague 1 (voice)

Nalie Lee

Sook-i (voice)