동창회의 목적: Reparto
Jo In-woo
Dong-cheol (동철)
Kim Yoo-yeon
Yoo-jin (유진)
Lee Hyeon-seong
Sang-joon (상준)
김늘메
Maeng-hoon (맹훈)
Yoo Seung-hyeon
Yeong-mi (영미)
Choi Go-eun
Mal-ja (말자)
Lee Hyeon-joo
Soon-jeong (순정)
Kim Jang-dong
Alumnus 1 (동창1)
Lee Chang-soo
Alumnus 2 (동창2)
Seon Jeong-hwa
Alumnus 3 (동창3)
Kim Si-jin
Alumnus 4 (동창4)
Seo Na-hye
BAR employee 1 (BAR직원1)
Kim Eun-bi
BAR employee 2 (BAR직원2)
이주희
Geum-rye (금례)
김건
Ending male alumni (엔딩동창남)
Moon Jin-yeong
Male witness (목격남)
Kim Bo-ri
Convenience store part-timer - Cameo (편의점알바)
Song Chang-hyeon
Yoo-jin's husband (유진남편)