About
In 1999, a teen girl keeps close tabs on a boy in school on behalf of her deeply smitten best friend – then she gets swept up in a love story of her own.
Director
Producers
Syd Lim, Kim Yong-eun
Music
Studio
Yong Film, CJ ENM Studios
Original Title
20세기 소녀
Original Language
Korean
Where to Watch
Region
Prices last updated September 27, 2026. Pricing and availability may vary by region.
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Cast
Full credits →K
Kim You-jung
Na Bo-ra
B
Byeon Woo-seok
Poong Woon-ho
P
Park Jung-woo
Baek Hyun-jin
R
Roh Yoon-seo
Kim Yeon-du
J
Jeong Seok-yong
Bo-ra's Father
Y
Yoon Yi-reh
Madam
J
Jeon Hye-won
Darn It
K
Kim Nu-rim
Dong-wook
H
Han Hyo-joo
Adult Na Bo-ra
L
Lee Beom-soo
School Teacher
R
Ryu Seung-ryong
Poong Woon-ho's Father
P
Park Hae-joon
Doctor at School Infirmary
G
Gong Myoung
Jung Woon-ho
O
Ong Seong-wu
Joseph / Poong Joon-ho
K
Kang Chae-young
Bok-soon
B
Bang Woo-ri
Yeon-du's Mother
L
Lee Cheon-mu
Bo-ra's Brother
L
Lee Woo-sung
Min Hong-gi
C
Choi Kyo-sik
Mailman
J
Jeong Min-jun
Young Joseph
