Character Name : Koo Jin-woo

Original Name : 정진영

Gender : Male

Character Name : Oh Sun-ah

Original Name : 김다현

Gender : Female

Character Name : Ahn Sung-bin

Original Name : 손정혁

Gender : Male

Character Name : Byun Tae-wan

Original Name : 이민구

Gender : Male

Character Name : Oh Dong-hyun

Original Name : 김요한

Gender : Male

Character Name : Yoon Ji-soo

Original Name : Kim Min-ju

Gender : Female

Character Name : Han Byeong-ju

Original Name : Lee Seung-jun

Gender : Male

Character Name : Koo Jin-woo's Father

Original Name : 박성웅

Gender : Male

Character Name : Koo Jin-woo's Mother

Original Name : 신은정

Gender : Female

Character Name : Technology and Home Economics Teacher

Original Name : 조달환

Gender : Male

Character Name : Geography Teacher

Original Name : 신기루

Gender : Female