17세의 조건

Seo Jeong-yeon

Jeong-kyeong

시은

An Seo-yeon

Lee Hang-na

Lee Hae-young

Yoon Chan-young

Ko Min-jae

Baek Su-ho

Kang Ki-hyeon

Kim Jong-tae

Min-jae's Father

Park Se-hyun

Jung Yu-ri

Choi Dae-hoon

Choi Soo-hwan

Oh Dong-min

Homeroom Teacher

Jung Chan-bi

Han Ju-mi