20th Century Girl

Kim You-jung

as

Na Bo-ra

Byeon Woo-seok

as

Poong Woon-ho

Park Jung-woo

as

Baek Hyun-jin

Roh Yoon-seo

as

Kim Yeon-du

Kim Sung-kyung

as

Bo-ra's Mother

Jeong Seok-yong

as

Bo-ra's Father

Yoon Yi-reh

as

Madam

Jeon Hye-won

as

Darn It

Kim Nu-rim

as

Dong-wook

Han Hyo-joo

as

Adult Na Bo-ra

Lee Beom-soo

as

School Teacher

Ryu Seung-ryong

as

Poong Woon-ho'...

Park Hae-jun

as

Doctor at Scho...

Gong Myeong

as

Jung Woon-ho

Ong Seong-wu

as

Joseph / Poong...

Kang Chae-young

as

Bok-soon

Bang Woo-ri

as

Yeon-du's Moth...

Lee Cheon-mu

as

Bo-ra's Brother

Jo Ji-hyeon

as

Teacher

Lee Woo-sung

as

Min Hong-gi

Choi Kyo-sik

as

Mailman

Jeong Min-jun

as

Young Joseph

Shin Dong-ryeok

as

Mulberry Extra...