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Si Yeon Kim as In-hyung |
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Lee Ye-eun as Young In-hyung |
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Jinseon Son as Friend |
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Sun Hee Kang as Mom |
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Hong Seung-il as Dad |
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Ae-Jin Kim as Sister / Consultant (voice) |
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Sun Wha Koo as Nurse / Sister (voice) |
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Heo Jung-do as Suspicious Doctor |
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Park Jung Min as Dad (voice) |
| Directing | Noh Do-yeon | Director |
| Crew | Hwayoung Son | Cinematography |
| Art | Kim Min Soo | Construction Coordinator |
| Sound | Ahn Kisung | Foley Artist |
| Editing | Noh Do-yeon | Editor |
| Costume & Make-Up | Aedel Park | Key Makeup Artist |
| Costume & Make-Up | Joohyun Yim | Costume Designer |
| Sound | Sungjoon Lee | Sound Designer |
| Sound | Noh Do-yeon | Music |
| Sound | Lee Kang-wook | ADR Recordist |
| Sound | YunKyung Lee | Sound Supervisor |
| Lighting | Seong Rok Hwang | Gaffer |
| Costume & Make-Up | Aedel Park | Key Hair Stylist |
| Art | Leah Chung | Concept Artist |
| Art | Lee Si-hoon | Art Direction |
| Editing | Noh Do-yeon | Colorist |
| Visual Effects | Noh Do-yeon | VFX Artist |
| Camera | Jin Soo Han | Key Grip |
| Camera | Won Koo Kang | Digital Imaging Technician |
| Lighting | Dae Woo Yun | Lighting Technician |
| Directing | Ahn Byung-rae | Assistant Director |
| Production | Sun-woo Park | Production Assistant |
| Camera | Da Sung Lee | Second Assistant Camera |
| Lighting | Yongjin Chung | Lighting Technician |
| Production | Sun Young Yim | Production Assistant |
| Costume & Make-Up | Natalia Che | Makeup & Hair |
| Costume & Make-Up | Adriana Catalano | Makeup & Hair |
| Camera | Jaeyeon Noh | Still Photographer |
| Costume & Make-Up | Josh Hoffman | Makeup & Hair |
| Art | Seul Ki Kim | Assistant Art Director |
| Lighting | YoonKyung Chang | Lighting Technician |
| Camera | Jin Chung | First Assistant Camera |
| Crew | Young-Ho Kim | Generator Operator |
| Camera | HaYoung Jeon | Still Photographer |
| Lighting | Woo Hyunk Choi | Lighting Technician |
| Writing | Noh Do-yeon | Writer |
| Production | Wooseok Chung | Producer |
