Pemeran Biscuit Teacher and Star Candy

Gong Yoo (공유)

as Park Tae In

Pemeran Utama

Kong Hyo Jin

as Na Bo Ri

Pemeran Utama

Kim Da Hyun

as Ji Hyeon U

Pemeran Utama

Choi Yeo Jin

as No Jem Ma

Pemeran Utama

Yang Geum Suk

as Ji Yeong Ae [Tae In's adoptive mother]

Pemeran Pembantu

Oh Yoon A

as Chae Eun Seong

Pemeran Pembantu

Lee Hyo Jung

as Park Jung Seop [Tae In's father]

Pemeran Pembantu

Park Hyo Jun

as O Sang Tae

Pemeran Pembantu

Jo Sang Ki

as Nam Seung Gi [Biology teacher]

Pemeran Pembantu

Kim Yoon Kyung

as O Ju Yun [Japanese teacher]

Pemeran Pembantu

Kang Do Han

as Lee Yu Jin

Pemeran Pembantu

Jo Han Na

as Bae Pil Sun

Pemeran Pembantu

Jo Hyung Ki

as Dong Chil Hwan [The principal]

Pemeran Pembantu

Lee Yoon Ji

as Na Seon Jae

Pemeran Pembantu

Go Joon Hee

as Kim Seon A

Pemeran Pembantu

Hyun Young

as Jo Ji A

Pemeran Pembantu

Park In Hwan

as Hwang Gap Su

Pemeran Pembantu

Jung Gyu Woon

as Lee Ho Jun

Pemeran Pembantu

Lee Eun

as Yeo Se Ra

Pemeran Pembantu

Jang Hee Jin (장희진)

as O Eun Byeol

Pemeran Pembantu

Yang Joo Ho

as Kim Yeong Song

Pemeran Pembantu

Jung Eui Chul

as Choi Chang Il

Pemeran Pembantu

Nam Chang Hee

as Kim Baek Jun

Pemeran Pembantu

Shin Hyun Tak

as Park Man Chang

Pemeran Pembantu

Cha Seo Rin

as Lee Hye Bin

Pemeran Pembantu

Geum Bo Ra

as Bae I Da [Bo Ri's mother]

Pemeran Pembantu

Seo Joon Young

as Park Jae In [Tae In's younger brother]

Pemeran Pembantu

Kim Yoon Kyung

as Teacher Woo [Japanese teacher]

Pemeran Pembantu

Lee Jae Yong

as [Bo Ri's dad]

Pemeran Pembantu

Jin Ji Hee

as Sin Nae [Yu Jin's sister]

Bintang Tamu

Kim Hee Jung

as [Yeong Song's sister] (Ep. 10)

Bintang Tamu

Ham Eun Jung

as He Ju [Student] (Ep. 16)

Bintang Tamu

Yoo Da In

as [Honor student]

Bintang Tamu

Kim Hyung Shik

Sutradara

Oh Jong Rok

Sutradara

Park Gye Ok

Screenwriter