Kadro (18)
Kwak Dong-yeonChoi Jung Woo
Lee Se-youngYang Ah Young
Kwak Jung-wookIm Duk Won
Choi Tae-joonLee Yuk Ho
Park Jeong-minShin Young Bok
Bae Noo-riJang Hyun Jin
Yoon ParkLee Won Il
Baek Sung-hyunadult Choi Jung Woo
Jung In-giJung Woo's father
Koh Soo-heeJung Woo's mother
Oh Youn-hongAh Young's mother
Jeong Soo-youngHomeroom Teacher
Yun Ju-sangYuk Ho's grandpa
Ahn Ji-hyunMoon Soo JungKang Han-saemPark Sung Tae
Lee Sung-yeolstudent council president
Lee Jong-hyunYang Young Woong
Kim Hwan-heeYoung Bok's little sister