Director
Screenwriter
Main Role
- Moon Chae WonSun Ok Nam [Young]Main Role
- Go Doo ShimSun Ok Nam [Old]Main Role
- Yoon Hyun MinJung Yi HyunMain Role
- Seo Ji Hoon Main Role
- Kang Mi NaJeom SoonMain Role
Support Role
- Ahn Kil KangTeacher GooSupport Role
- Hwang Young HeeFairy Oh Seon NyeoSupport Role
- Go Geon HanPark Shin Seon [Hermit]Support Role
- Jeon Soo JinLee Ham Sook [Professor]Support Role
- Ahn Young MiJo Bong DaeSupport Role
- Im Ha RyongKing Buk DuSupport Role
- Ahn Seung GyunOh Kyung Shik [Lab pupil]Support Role
- Kim Sung HyunUm Kyung SulSupport Role
- Yoo Ah ReumAhn Jeong Min [Lab Pupil]Support Role
- Baek Hyun Joo[Kim Geum's mother]Support Role
- Yoon So YiLee Ji [Black Star Fairy]Support Role
- Han Da Hee[Prof. Jung’s student #1]Support Role
- Son Dong Hwa[Park’s Teaching Asst.]Support Role
- Kim Bit Na Ri[Prof. Jung’s student #2]Support Role
- Jung Ji HoonJung Yi Hyun [Young]Support Role
- Jung Young Joo[Fairy Realm - Teacher]Support Role
- Kang Da Hyun[Prof. Jung’s student #4]Support Role
- Yoo In Soo[Prof. Jung’s student #3]Support Role
- Jung Kang HeeThomas KimSupport Role
Guest Role
- Park Seung Tae[Mother's friend] (Ep. 1)Guest Role
- Son Hee Soon[Mother's friend] (Ep. 1)Guest Role
- Seo Eun SolSun Ok Nam [Young] (Ep. 12)Guest Role
- Choi Na MooAsstistant professor Lee Bon (Ep. 2, 11)Guest Role
- Han Hyun MinCalvin Nim [Hermit] (Ep.3)Guest Role
- Ji Sung Geun[Train station assistant] (Ep. 3)Guest Role
- Lee Yong Nyeo[Flower in her hair] (Ep. 4)Guest Role
- Cha Yeon Woo[Nobel in web novel]Guest Role
- Geum Kwang San[Van driver] (Ep. 6)Guest Role
- So Hee JungSister Bo Won (Ep. 8)Guest Role
- Choi Jung NamSister Ye San (Ep. 8)Guest Role
- Shin Shin Beom[Village drunkard] (Ep. 14)Guest Role
- Park Kwi Soon[Monk] (Ep. 14)Guest Role
- Kim Sun AhButterfly Head Eelworm [Voice]Guest Role
- Yeom Dong HunProfessor Park [Yi Hyun’s rival]Guest Role
- Jung Kyung HoJeum Dol [Voice]Guest Role
- Eric MunFrog [Voice]Guest Role
- Song Young Jae[Clothing store owner]Guest Role
- Kang Seung Wan[Pickpocket]Guest Role
- Kum Chae Ahn[Fairy and Villager outside shed]Guest Role
- Kwon Oh GeonJeum Dol [Young son]Guest Role
- Hong Dong YoungKim Geum [Young]Guest Role
- Jung Yu MiLotus [Voice]Guest Role
- Choi Gyo Shik[Villager glad Ok Nam is back] (Ep. 13)Guest Role
- Go Do YeonJeom Soon [Young]Guest Role
- Ji Won HoKim Geum [Youth]Guest Role
- Seo Yi Soo[Girl with cotton candy]Guest Role
- Kim Dae Kyung[Slave in web novel]Guest Role
- Lee Hyo Rin[Child in the shed]Guest Role
- Son Young Sun[Outside the locked shed]Guest Role
- Ham Gun Soo[Ship Captain]Guest Role
- Kim Dong Kyu[Professor Park's Asst.]Guest Role
- Lee Do Yeon[Villager offers porridge]Guest Role
- Woo Sung Min[Kid teasing Jeom Soon]Guest Role
- Park Mi Ri[Beer bar part-time worker]Guest Role
- Jun Eun Mi[Neighborhood middle-aged woman] [Voice]Guest Role
- Kim Ji Wan Guest Role
- Jung Sang Hoon Guest Role
- Son Seung Hun[Assistant]Guest Role
- Song Da KyungIvanya [Deputy]Guest Role
- Lee Soo Yeon[Assistant]Guest Role
- Bae Kyung Min[Drunkard]Guest Role
- Lee Soo Yong[Taxi driver]Guest Role
- Park Sang Hyun Guest Role
- Shin Ye On Guest Role
- Kwon Chan Min[Film dept. student]Guest Role
- Lee Su Min[University student]Guest Role
- Kim Esther[High School student]Guest Role
- Myung Seok GeunUncle San Gi [Ghost/Goblin]Guest Role
- Park Joon Soo[Assistant]Guest Role
Unknown
- Jung Jun Hwan Unknown
- Shin Ji Woo Unknown
- Nash Ang Unknown
Bit part
- Moon Chang Jun[Student]Bit part
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