as

Seo Young-joo

as

Yi-heon/Kim Deuk-pal

as

Seo Young-min

as

Gong Yoon Tak

as

Self

as

Lee Cheong-san

as

Joon

as

Self

as

Ju Dong-myung

as

Su-ho

as

Joon-young / Ji-geun

as

Ko Min-jae

as

Lee Ki Suk (A CIPA patient)

as

Jong-wook

as

Gong Woo-Jin (young)

as

Han Cheol

as

Young Wang Rin

as

Kang Dong-joo (Young)

as

young Hong Joo-won

as

Ddang-sae (young)

as

Park Ri-Hwan (15 years old)

as

Young Soo-chul

as

young In-soo

as

young Ryu Tae-oh

as

Han Geu-roo

as

Lee Woo Jin

as

young Lee Jae-hee

as

young Jung Sun-woo

as

Self