as

Kang Se-yeon

as

Young-woo

as

Yoo Mi-young

as

Chemistry teacher

as

Choi Kang-soon

as

Jang Young-Sil

as

Lee Ji-Young 'A'

as

Kang Su-a

as

Young-Ae

as

Yang Baek-hee (Becky) / Yang So-hee

as

Self

as

[Junior]

as

Gil Sin-seol

as

Self

as

Hong-dan

as

Eun-Jin

as

Yoo Mi-young

as

Chan-young

as

Gu Mi Jin

as

Choon-Sim

as

Jeong Yeon-su

as

Yu-mi Kang

as

Kim Hee-mee

as

Herself

as

Seon-ju

as

Yung-eun

as

Han Ji-Hye

as

Chinese girl #2