as Ki-jun's Father

as 40s man

as Cho Jun-mo

as Han Si-won

as Cho Sang-cheol

as Jin Dae-soo

as Kwon Hyeok-joo

as Doctor

as Teacher

as Prosecutor Kang

as Oh Seong-Hoon

as Baek Young Cheol

as Lee Chong Seop

as Shim Deok-Chul [Young]

as Choi Sang Ho [Security personnel]

as Byung-ju

as Prosecutor Im

as Dr. Han

as Ha-Neul's high school teacher

as Glasses company staff

as Mr. Lee

as Oh Yun-sang

as Control M