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김정은 as In-young |
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이태성 as Lee Suk / Lee Soo |
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김영재 as Jung-woo |
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정유미 as Young In-young |
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이주실 as In-young's Mother |
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김꽃비 as Cram School Student |
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장소연 as ER Nurse |
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최반야 as English Teacher |
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Jun Kim as Adult Lee Suk |
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Lee Seok as Young Jung-woo |
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Kwak Min-seok as Driver |
| Writing | 정지우 | Writer |
| Directing | 정지우 | Director |
| Writing | Kong Mi-jeong | Writer |
| Editing | 정지우 | Editor |
| Sound | Lee Jae-jin | Original Music Composer |
| Production | Kang Woo-suk | Producer |
| Camera | Choi Hyeon-gi | Director of Photography |
| Writing | Lee Hat-yim | Story |
| Lighting | Kang Dae-hui | Lighting Director |
| Art | Seo Myung-hae | Production Design |
