Pemeran Second 20's

Choi Ji Woo

as Ha No Ra

Pemeran Utama

Lee Sang Yoon

as Cha Hyeon Seok

Pemeran Utama

Choi Won Young (최원영)

as Kim Woo Chul

Pemeran Utama

Kim Min Jae (김민재)

as Kim Min Soo

Pemeran Pembantu

Son Na Eun (손나은)

as Oh Hye Mi

Pemeran Pembantu

Park Hyo Ju

as Kim Yi Jin

Pemeran Pembantu

Jung Soo Young

as Ra Yoon Yeong

Pemeran Pembantu

Kim Kang Hyun

as Seo Dong Cheol

Pemeran Pembantu

Noh Young Hak

as Na Soon Nam

Pemeran Pembantu

Choi Yoon So

as Shin Sang Ye

Pemeran Pembantu

Jin Ki Joo (진기주)

as Park Seung Hyun

Pemeran Pembantu

Kim Hee Chan

as Cha Hyun Suk [Young]

Pemeran Pembantu

Ha Seung Ri

as Ha No Ra [Young]

Pemeran Pembantu

Seong Chan Ho

as [Doctor]

Pemeran Pembantu

Im Se Ju

as Ra Yun Yeong [Young]

Pemeran Pembantu

Cha Bo Sung

as [Faculty representative]

Pemeran Pembantu

Kim Woo Hyeok

as Kyeong Sik

Pemeran Pembantu

Lee Yoo Jin

as Lee Dae Seong

Pemeran Pembantu

Yoon Ra Young

as Seol Hyeon

Pemeran Pembantu

Ji Ha Yoon

as Min Ae

Pemeran Pembantu

Joey Albright

as Brad Jones (Ep. 1)

Bintang Tamu

Kwon Hae Hyo

as (Ep. 1)

Bintang Tamu

Kim Byung Chun

as Professor Song (Ep. 3)

Bintang Tamu

Hwang Ye Ji

as [Backup dancer] (Ep. 8)

Bintang Tamu

Seo Han Gyeol

as Lee Man Gi

Bintang Tamu

Byun Joon Suk

as Se Won

Bintang Tamu

Kang Tae Oh (김윤환)

as Kim U Cheol [Young]

Bintang Tamu

Lee Jae Joon

as Dan

Bintang Tamu

Woo Gi Hoon

as Woo Hun

Bintang Tamu

Hwang Se Jung

as [College student]

Bintang Tamu

Park Dae Won

as [University student]

Bintang Tamu

Ju Ah Yeon

as [High school student]

Bintang Tamu

Ban Hyo Jung

as Seo Woon Hae [Ha No Ra's grandma]

Bintang Tamu

Kim Hyung Shik

Sutradara

Park Gok Ji

Editor

So Hyun Kyung

Screenwriter

Park Heung Sik

Screenwriter & Sutradara

Lee Dal

Bit part