Générique complet
Our School E.T.
김수로
Cheon Seong-geun
Park Bo-young
Han Song-i
이
이찬호
Ok Gi-ho
김형범
Cha Seung-ryong
김기방
Meok-tong
박진택
Jin-gook
Kim Young-ok
Seong-geun's Mother
Ha Jung-woo
Doctor
JS
Jang Hee-Su
Gi-ho's Mother
Lee Yong-yi
Eun-sil's Mother
LK
Lee Hyung-Kwon
Vice-principal
공호석
Teacher Choi
Lee Han-wi
Principal
김성령
President Lee
Moon Chae-won
Lee Eun-sil
Lee Min-ho
Oh Sang-hoon
백성현
Baek Jung-goo
이언정
Chemistry Teacher
Kim Byeong-ok
Publishing Company President
김
김원진
Referee
Ji Hye-in
Ji Yeon
Son Min-ji
Interview Student 3
Oh Soon-tae
Ja Ba Nom
임
임주현
Touchy Couple Male
유
유밀
Touchy Couple Female