옥탑방 고양이

정다빈

Nam Jung-eun

김래원

Lee Kyung-min / Kevin Lee

최정윤

Na Hye-ryun

Lee Hyeon-woo

Yoo Dong-joon

봉태규

Nam Jung-woo, Jung-eun's younger brother

Jang Yong

Nam Sang-sik, Jung-eun's father

진태현

Yong Joon [Kyung Min's college friend]

김자옥

Kim Soon-deok, Jung-eun's mother