Full cast of What is Love?

Sa Mi-ja

Mi-sook

66 episodes

Youn Yuh-jung

Han Sim-ae

66 episodes

Lee Soon-jae

Lee Byeong-ho

66 episodes

Ha Hee-ra

Park Ji-eun

66 episodes

Shin Ae-ra

Park Jung-eun

66 episodes

Choi Min-soo

Lee Dae-bal

66 episodes

Kang Boo-ja

Sun-sook

66 episodes

Yeo Un-gye

Jin-sook

66 episodes

Kim Hye-ja

Yeo Soon-ja

66 episodes

Lee Jae-ryong

Han Cheol-jin

66 episodes

Yang Hee-kyung

Hee-kyung

66 episodes