방과후 옥상

봉태규

Nam Kong-dal

진태현

Yeon-seong

하석진

Jae-koo

Baek Soo-jang

최은주

Mae-soon

추상미

Female Doctor

이제훈

Ahn-Kyung

Чо Даль Хван

Byung-goo

임정운

Biology Teacher

Jeong Yoon-jo

Min-ah

Cheng Yun

Man-chang

Seung-yeol Cha

Tae-chang

Chang-ju Sin

Wangkeul's Doctor Kim

손병욱

Tae-son

홍경연

Kong-dal's Mother

Jeong Dae-hoon

Student on bus