17세의 조건

Seo Jeong-yeon

Jeong-kyeong

박시은

An Seo-yeon

이항나

Lee Hae-young

Yoon Chan-young

Ko Min-jae

백승환

Kang Ki-hyeon

Kim Jong-tae

Min-jae's Father

Park Se-hyun

Jung Yu-ri

Choi Dae-hoon

Choi Soo-hwan

오동민

Homeroom Teacher

정찬비

Han Ju-mi