Director
Screenwriter
Main Role
- Byeon Woo SeokRyu Seon JaeMain Role
- Kim Hye YoonIm SolMain Role
- Song Geon HeeKim Tae SeongMain Role
- Lee Seung HyubBaek In HyeokMain Role
Support Role
- Jung Young JooPark Bok Sun [Im Sol's mother]Support Role
- Sung Byung SookJung Mal Ja [Im Sol's grandma]Support Role
- Song Ji HoIm Geum [Im Sol's brother]Support Role
- Seo Hye WonLee Hyeon Ju [Im Sol's friend]Support Role
- Kim Won HaeRyu Geun Deok [Seon Jae's father]Support Role
- Ahn Sang WooKim Seok Hyeon [JNT’s CEO]Support Role
- Lee Il JoonPark Dong Seok [Seon Jae's manager]Support Role
- Moon XionHyeon Su [‘Eclipse’ drummer]Support Role
- Jang HyukJay [‘Eclipse’ bassist]Support Role
- Lee Chul WooKim Hyeong Gu [Seon Jae's rival]Support Role
- Kim Hyun KyuChoi Hyeon Gu [Seon Jae's friend]Support Role
- Jung Kang HeeCoach An [Swimming team coach]Support Role
- Lee Woo JeKim Cho Rong [Seon Jae's friend]Support Role
- Park Yoon HeeKim Won Cheol [Tae Seong's father]Support Role
- Kim Hwi GyuCha I Seul [Tae Seong's friend]Support Role
- Oh Se YoungChoi Ga Hyeon [Tae Seong's ex-girlfriend]Support Role
- Jeon YoungLee Gyeong Ja [BON cinema's CEO]Support Role
- Ko Tae JinChoi Jeong Hun [BON cinema's employee]Support Role
- Heo Hyung KyuKim Yeong Su [Taxi driver]Support Role
Guest Role
- Lee Soo JiGrandma Celestial (Ep. 1)Guest Role
- Kwon Yu RiKwon Yu Ri [Herself] (Ep. 1)Guest Role
- Park Tae HwanPark Tae Hwan [Swimmer] (Ep. 1)Guest Role
- Seo Young Sam[Teacher] (Ep. 1)Guest Role
- Dok Ko Kwang[Student] (Ep. 1)Guest Role
- Jung Ki Sun[Security guard] (Ep. 1)Guest Role
- Im Dong Min[Security guard] (Ep. 1)Guest Role
- Jeon Young Woon[Kwon Yu Ri's manager] (Ep. 1)Guest Role
- Han Seung YeonDJ Hamster (Ep. 1, 4, 6)Guest Role
- Jang Eun Seo[Concert staff] (Ep. 1, 7)Guest Role
- Chae Yoon HeeMs. Kwon (Ep. 2)Guest Role
- Kwon Dan A[Student] (Ep. 2)Guest Role
- Ko Seo Jeong[Math teacher] (Ep. 2)Guest Role
- Kim Jae Man[Students’ dean] (Ep. 2)Guest Role
- Oh Tae Eun[Aunt] (Ep. 3)Guest Role
- Han Sang Chul[Uncle] (Ep. 3)Guest Role
- Kim Sang Il[Doctor] (Ep. 3)Guest Role
- Min Sang Chul[Doctor] (Ep. 3)Guest Role
- Choi Ja Woon[Bus boy] (Ep. 3)Guest Role
- Na Ho Won[Bus driver] (Ep. 3)Guest Role
- Shin Yeon WooIm Sol [Young] (Ep. 4)Guest Role
- Kim Se HeonIm Geum [Young] (Ep. 4)Guest Role
- Lee Hyun[Shaman] (Ep. 4)Guest Role
- Lee Dong Kyu[Anchorman] (Ep. 4-5)Guest Role
- Park Kyu Beom[Bus driver] (Ep. 4, 7)Guest Role
- Koo Kyo MinDong Seop (Ep. 5)Guest Role
- Kwon Oh Jun[Clothes seller] (Ep. 5)Guest Role
- Park Geon Rak[Police officer] (Ep. 5-6)Guest Role
- Jung Yong Hee(Ep. 6)Guest Role
- Yoon Jin Young[Joseon Dynasty king actor] (Ep. 7)Guest Role
- Kang Seong Hwa[Apt. security guard] (Ep. 7-8)Guest Role
- Shin Su AIm Bo A [Im Geum's daughter] (Ep. 7, 13-16)Guest Role
- Jung Dae Yong[Security guard] (Ep. 8)Guest Role
- Han Myung Chul[Maintenance man] (Ep. 8)Guest Role
- Yook Mi Ra[Restaurant worker] (Ep. 8)Guest Role
- Yoo Eun Jo[School employee] (Ep. 8)Guest Role
- Ki Hwan[Detective] (Ep. 9)Guest Role
- Kim Ye Bon[Media communication student] (Ep. 9)Guest Role
- Kim Dae Kook[Superstar K judge] (Ep. 10)Guest Role
- Koo Min Hyuk[Director] (Ep. 11)Guest Role
- Kim Jin Seo[Geun Deok’s friend] (Ep. 11)Guest Role
- Song Young Jae[In Hyeok's dad] (Ep. 12)Guest Role
- Jo Ryeon[In Hyeok's mom] (Ep. 12)Guest Role
- Kim Min KiPark Do Jun (Ep. 13)Guest Role
- Shin Seung Yong[CEO] (Ep. 13)Guest Role
- Uhm Tae Ok[Restaurant worker] (Ep. 13)Guest Role
- Koo Tae OIm Jae A [Im Geum's son] (Ep. 13, 15-16)Guest Role
- Kim Young Mi[Writer] (Ep. 14)Guest Role
- Bae Sung Il[Detective] (Ep. 14)Guest Role
- Lee Jae Eun[Waitress] (Ep. 14, 16)Guest Role
- Jo Moon Eui[Taxi co. employee] (Ep. 15)Guest Role
- Kim Jae Il[Apt. security guard] (Ep. 15)Guest Role
- Goo Min Sol[Yellow umbrella student] (Ep. 15)Guest Role
- Kim Soo OhDetective Seo (Ep. 15-16)Guest Role
- Ju Min Ha[Actress] (Ep. 16)Guest Role
- Seo Eun Seo[Café staff] (Ep. 16)Guest Role
- Lee Na Hyun[Jewelry store employee] (Ep. 16)Guest Role
- Im Jung Ok[Birthday party attendee] (Ep. 16)Guest Role
- Shin Ha Jun[Birthday party attendee] (Ep. 16)Guest Role
- Kim Ji Ahn[Wheelchair girl's mother] (Ep. 16)Guest Role
- Lee Tae HunJang UGuest Role
- Kim Min SeokJin SangGuest Role
- Han Chang HyunJung RyulGuest Role
- Hwang Jun HeeHwang Yu Jeong [Student]Guest Role
- Jung A JeongDa Hye [Yeonseo University student]Guest Role
- Choi Hyun YoungEun Ji [Yeonseo University student]Guest Role
- Kim Woon Kyo[Nurse]Guest Role
- Hwang Do Yoon[Stalker]Guest Role
- Park Joo Young[Detective]Guest Role
- Park Joo Yong[Detective]Guest Role
- Moon Hye Rin[Ga Hyeon's friend]Guest Role
- Lee Gun chang[Swim team student]Guest Role
- Han Jong Kyu[Swimming club member #1]Guest Role
- Kim Hak Soo[Ferris wheel worker]Guest Role
Unknown
- Kim Seon Gyeong Unknown
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