Kim Yoo-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's Father

Park Hae-joon

as Doctor at School Infirmary

Gong Myoung

as Jung Woon-ho

Ong Seong-wu

as Joseph / Poong Joon-ho

Kang Chae-young

as Bok-soon

Bang Woo-ri

as Yeon-du's Mother

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 Extract Vendor