울학교 이티

김수로

Cheon Seong-geun

Park Bo-young

Han Song-i

Sin foto

Lee Chan-ho

Ok Gi-ho

김형범

Cha Seung-ryong

김기방

Meok-tong

Park Jin-Taek

Jin-gook

김영옥

Seong-geun's Mother

하정우

Doctor

Sin foto

Jang Hee-Su

Gi-ho's Mother

이용이

Eun-sil's Mother

Sin foto

Lee Hyung-Kwon

Vice-principal

공호석

Teacher Choi

이한위

Principal

김성령

President Lee

문채원

Lee Eun-sil

Lee Min-ho

Oh Sang-hoon

백성현

Baek Jung-goo

이언정

Chemistry Teacher

김병옥

Publishing Company President

Sin foto

김원진

Referee

Ji Hye-in

Ji Yeon

Son Min-ji

Interview Student 3

오순태

Ja Ba Nom

Sin foto

임주현

Touchy Couple Male

Sin foto

유밀

Touchy Couple Female