Pemeran Happy Once Again

Jang Na Ra (장나라)

as Han Mi Mo

Pemeran Utama

Jung Kyung Ho (정경호)

as Song Soo Hyeok

Pemeran Utama

Yoo Da In

as Baek Da Jeong

Pemeran Utama

Kwon Yul (권율)

as Dr. Goo Hae Jun

Pemeran Utama

Yoo In Na (유인나)

as Go Dong Mi

Pemeran Utama

Seo In Young

as Hong Ae Ran

Pemeran Utama

Kim Tae Hoon

as Kim Geon Hak [Da Jeon's husband]

Pemeran Pembantu

Ahn Hyo Seop (안효섭)

as An Jung U [Dong Mi's boyfriend]

Pemeran Pembantu

Ko Kyu Pil

as Na Hyeon Gi [Soo Hyuk's co-worker]

Pemeran Pembantu

Park Eun Seok

as Bang Dong Bae [Ae Ran's fiancee]

Pemeran Pembantu

Jang Joon Yoo

as Song Si A [Song Jae's fiancee]

Pemeran Pembantu

Lee Chae Eun

as Jung A Ni [Soo Hyeok's co-worker]

Pemeran Pembantu

Kim Sa Kwon

as Kim Song Jae [Mi Mo's ex-husband]

Pemeran Pembantu

Choi Duk Moon

as [Su Hyeok's boss]

Pemeran Pembantu

Hwang Sun Hee

as Woo Yeon Su [Hae Jun's ex-wife]

Pemeran Pembantu

Kim Dan Yool

as Song Min U [Su Hyeok's son]

Pemeran Pembantu

Choi Kwon Soo

as Song Su Hyeok [Young]

Pemeran Pembantu

Lee Young Eun

as Han Mi Mo [Young]

Pemeran Pembantu

Lee Seul Bi

as So Eun

Pemeran Pembantu

Kim Ji An

as Koo Yeon Mi

Pemeran Pembantu

Park Young Soo

as [Worker at Su Hyeok and Mi Mo's building]

Pemeran Pembantu

Jin Ki Joo (진기주)

as An Seon Su [Min U's mother]

Bintang Tamu

Sandara Park

as Koo Seul A [Former "Angels" member]

Bintang Tamu

Kim So Yeon

as Kim Song Hyeon (Ep. 1)

Bintang Tamu

Lee Dong Ha

as Kim Jung Hun [Mi Mo's boyfriend] (Ep. 1)

Bintang Tamu

Oh Jung Se

as [Da Jung's client] (Ep. 1)

Bintang Tamu

Kwak Shi Yang (곽시양)

as [Song Hyeon's husband] (Ep. 1)

Bintang Tamu

Seo Hyun Chul

as [Worker at the register office] (Ep. 1-2)

Bintang Tamu

Jung Ji Soon

as [Mi Mo's client] (Ep. 2)

Bintang Tamu

Lee Yeon Du

as [Min U's teacher] (Ep. 2)

Bintang Tamu

Sa Hee

as Woo Jeong Mi [Teacher] (Ep. 3)

Bintang Tamu

Park Hwi Soon

as [Teacher] (Ep. 3)

Bintang Tamu

Muzie

as [Fortune teller] (Ep. 3)

Bintang Tamu

Jung Dong Gyu

as [Dong Mi's boss] (Ep. 3)

Bintang Tamu

Jang Seo Hee

as [Dong Mi's student] (Ep. 3)

Bintang Tamu

Kim Hyo Seo

as [Client of the fortune teller] (Ep. 3)

Bintang Tamu

Kim Min Joon

as Lee Wook [Dong Mi's crush] (Ep. 3-8)

Bintang Tamu

Kim Ha Kyun

as [Matchmaking client] (Ep. 4)

Bintang Tamu

Stephanie

as Bong Bong Mi (Ep. 7)

Bintang Tamu

Son San

as [Lee Uk's wife] (Ep. 7)

Bintang Tamu

Yoon Jong Hoon

as [Dong Mi's ex-boyfriend] (Ep. 7)

Bintang Tamu

Baek Bong Ki

as Chun Gi

Bintang Tamu

Mi So Yun

as Nurse Kim

Bintang Tamu

Song Joon Hee

as Kim Tae Yong

Bintang Tamu

Seo In Sung

as Song Min U [Child]

Bintang Tamu

Park Geon Gyu

as [FD]

Bintang Tamu

Moon Se Yoon

as [Cupid]

Bintang Tamu

Hong Ki Joon

as [Blind date]

Bintang Tamu

Seo Jang Hyun

as [Classmate]

Bintang Tamu

Son Sung Yoon

as [Su Hyuk's date]

Bintang Tamu

Park Hae Mi

as [Ae Ran's mother]

Bintang Tamu

Shin Bi

as [Perilla leaf personality]

Bintang Tamu

Sazal Kim

as [Counterfeit goods dealer]

Bintang Tamu

Jung Young Hoon

as [Hae Jun's friend from university days]

Bintang Tamu

Lee Ji Hoon

Bintang Tamu

Seo Ye Hee

Bintang Tamu

Seo Han Gyeol

Bintang Tamu

Ray Yang

Bintang Tamu

Lee Chae Min

Bintang Tamu

Park Dae Kyu

Bintang Tamu

Nam Hye Seung

Composer

Kwon Sung Chang

Sutradara

Heo Seong Hui

Screenwriter