Pemeran Queen of the Ring

Kim Seul Ki (김슬기)

as Mo Nan Hui

Pemeran Utama

Ahn Hyo Seop (안효섭)

as Park Se Gun

Pemeran Utama

Yoon So Hui

as Kang Mi Ju

Pemeran Pembantu

Hwang Jung Min

as Moon Je Hwa [Nan Hui's mother]

Pemeran Pembantu

Jeon Noh Min

as Mo Jung Hun [Nan Hui's father]

Pemeran Pembantu

Lee Tae Sun

as Byeon Tae Hyeon [Nan Hui's childhood friend]

Pemeran Pembantu

Choi Tae Hwan

as Ma Deuk Chan [Se Gun's classmate]

Pemeran Pembantu

Kim Min Young

as Pi On Hwa [Nan Hui's classmate]

Pemeran Pembantu

Kang Ki Young (강기영)

as [Fashion show stage manager] (Ep. 1)

Bintang Tamu

Lee Jin Sung

as [Fashion show staff] (Ep. 1)

Bintang Tamu

Song Hae Na

as [Model] (Ep. 1)

Bintang Tamu

Seong Hye Min

as [Woman walking on the street] (Ep. 2)

Bintang Tamu

Kim Jae Heum

as [Convenience store owner] (Ep. 3)

Bintang Tamu

Ahn Soo Ho

as Ok Ddul Me [Man in a soybean paste making class] (Ep. 6, 21)

Bintang Tamu

Kim Hye Yoon (김혜윤)

as [Sitting woman] (Ep. 10)

Bintang Tamu

Song Eui Joon

as Park Se Gun [Young] (Ep. 12)

Bintang Tamu

Kwak Shi Yang (곽시양)

as [Professional model] (Ep. 17)

Bintang Tamu

Hwang Jae Geun

as [Judge] (Ep. 20-21)

Bintang Tamu

Ha Min

as [Judge] (Ep. 20-21)

Bintang Tamu

Yun Si Yun (윤시윤)

as [Boyfriend with a ring] (Ep. 21)

Bintang Tamu

Jo Soo Hyang

as [Girlfriend with a ring] (Ep. 21)

Bintang Tamu

Park Se Hoon

as [College student]

Bintang Tamu

Kim So Hye

as So Hye [Se Gun's ex-girlfriend / I.Q.I member] (Ep. 1)

Bintang Tamu

Choi Na Moo

as [Nan Hui's classmate] (Ep. 12)

Bintang Tamu

Lee Yeon Soo

as [Se Gun's mother] (Ep. 12)

Bintang Tamu

Kwon Sung Chang

Sutradara

Kim A Yeong

Screenwriter