Esom

Lee Young-jae, a cold, yet spontaneous and honest woman who gave up college and started working as an assistant hairdresser.

Woo Su-ji, a school friend of Ji-ho who works in a corporate office. Her dream was to be the CEO of her own business but she is trapped in a well-paying position where she must bear with frequent sexual harassment from her male colleagues.

Shin Hyo-jung (ep 1)

Yoo Eun-sung, a girl who used to be bright and friendly, but has since become withdrawn and cynical.