Attic Cat

Jeong Da-bin

Nam Jung-eun

Kim Rae-won

Lee Kyung-min / Kevin Lee

Choi Jung-yoon

Na Hye-ryun

Lee Hyeon-woo

Yoo Dong-joon

Bong Tae-gyu

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

Jang Yong

Nam Sang-sik, Jung-eun's father

Zin Tae-hyun

Yong Joon [Kyung Min's college friend]

Kim Ja-ok

Kim Soon-deok, Jung-eun's mother

Kim Mu-saeng

Lee Pil-deuk, Kyung-min's grandfather

Kang Boo-ja

Lee Kyung-hee, Kyung-min's grandmother

Kim Chang-sook

Hye-ryun's mother

Zin Tae-hyun

Joon-ho, Kyung-min's college friend