as Kang Se-yeon

as Yoo Mi-young

as Chemistry teacher

as Young-woo

as Choi Kang-soon

as

as Lee Ji-Young 'A'

as Jang Young-Sil

as Young-Ae

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

as Self

as Kang Su-a

as

as Self

as Gil Sin-seol

as [Junior]

as Yoo Mi-young

as Eun-Jin

as Hong-dan

as

as Chan-young

as Gu Mi Jin

as Choon-Sim

as Jeong Yeon-su

as

as Yu-mi Kang

as Kim Hee-mee

as Herself

as Seon-ju

as Yung-eun

as Han Ji-Hye

as Chinese girl #2