Ryu Deok-hwan

Nam-woo

Gong Hyung-jin

Jun-ho

Ahn Sung-ki

Kyung-min

Bae Jong-ok

Nam-woo's mother

Na Moon-hee

Nam-woo's grandmother

Jang Hang-seon

Jun-ho's father

Lee Byung-hun

Nam-woo (adult)

Lee Seok-jun

Office Colleague 1

Alejandro Fallick

Nam-woo (English version, voice)

Jay Hickman

Adult Nam-woo (English version, voice)

Clint Bickham

Jun-ho (English version, voice)

Chris Patton

Adult Jun-ho (English version, voice)

Christine McPeters Auten

Nam-woo's mother (English version, voice)

Shelley Calene-Black

Nam-woo's Grandma (English version, voice)

John Swasey

Jun-ho's Father (English version, voice)

Kira Vincent-Davis

Soog-Y (English version, voice)

Andy McAvin

Kyung-min (English version, voice)

Greg Ayres

Additional Voices

Monica Rial

Additional Voices

Kaytha Coker

Additional Voices