

08/06/2017
Yong-soon is an 18-year-old high school student. She falls in love with her gym teacher, but she thinks her teacher might have a girlfriend. Yong-Soon and her friends try to find out whether he does have a girlfriend, but they can't find any clues. Making things worse, her father brings a new stepmother from Mongolia.

Lee Soo-kyung
as Yong-soon

Choi Deok-moon
as Father

Park Keun-rok
as PE Teacher

Kim Dong-young
as Bbak-gyu

Jang Hat-sal
as Moon-hee

Choi Chan-sook
as Che-yook's Mother

Kim Ja-young
as Moon-hee's Mother

Park Chul-min
as Chief of School Administration

Kim Min-jae
as Music Teacher

Choi Yeo-jin
as English Teacher

Kim Eung-soo
as Principal

Kim Han-na
as Athletic Club Senior

Kim Ha-yeon
as Young Yong-soon

Kim Young-jae
as Birth Mother's Old Love

Lee Na-ra
as Birth Mother

Park Ji-yeon
as Art Teacher

Chang Hyae-jin
as Middle-aged Woman

Kim Keum-soon
as Supermarket Worker

Na Ae-jin
as Athletic Club Member

Han Sa-myeong
as New Gym Teacher

Woo Yeon-seo
as Ethics Teacher
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