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이제훈

Jang-ho

한석규

Sang-jin

강소라

Sook-hee

Lee Jae-yong

Gang Boss

진경

Mi-sun

배성우

Sang-jin's Alumnus

Cho Jin-woong

Chang-soo

김지석

Drunken Man (cameo)

이상훈

Teacher

Yoon Yeong-gyun

Delivery Man

Yang Han-yeol

Ji-min

Oh Dal-su

Principle Deok-saeng