Who Is She

Kim Hae-sook

Oh Mal-soon

Jung Ji-so

Oh Doo-ri

Jung Jin-young

Daniel Han

Chae Won-been

Choi Ha-na

Sowon

Chan Mi

Lee Hwa-Kyum

Li Na

Lee Kwang-hee

Sang-joo

Yoo Jung-hoo

Acting

Jung Bo-seog

Park Gap Yong

Seo Young-hee

Ban Ji Suk [Choi Ha-na's mother, Choi Min-seok's wife, Oh Mal-soon's daughter]

In Gyo-jin

Choi Min-seok

Cha Hwa-yeon

Kim Ae Sim

Lee Dal

Hoi

Oh Ji-yeon

Joon Hee

현재연

Soo Jin [member of the group Element]

Lee Ji-hyeon

Min Ah

낸시 양

Olla [member of the group Element]

장서원

Jay [member of the group Element]

Kim Sung-Won

Park Ja Young [Park Gap Yong's son]

Park Young-soo

Park Young Joon

Hong Seo-jun

Park Young Suk [Park Young Joon's brother]

Shin Shin-ae

Shin Soon Ae

Lee Yong-i

Jang Gwi Rye

Shin Yeon-sook

Oh Choon Boon

Choi Jung-woo

Byun Kang Suk

Kim Byeong-ok

Mysterious taxi driver