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Yoon Ah-young as Yi-gyeong (voice) |
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송하림 as Su-yi (voice) |
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이다슬 as Eun-ji (voice) |
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Jang Mi as Acco / Yi-gyeong's Mother (voice) |
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이규창 as Teacher / Yi-gyeong's Father (voice) |
| Directing | Han Ji-won | Director |
| Sound | Lee Soo-bin | Music |
| Writing | Choi Eun-young | Short Story |
| Writing | Han Ji-won | Adaptation |
| Writing | Han Ji-won | Storyboard |
| Visual Effects | Lee Yun-hee | Animation Director |
| Camera | Im Beom-sang | Director of Photography |
| Writing | Lee Soo-bin | Lyricist |
| Sound | Jung-woo | Theme Song Performance |
| Sound | Hong Seong-jun | Sound Supervisor |
| Sound | Park Cho-rong | Sound Designer |
| Production | Kim Seon-ho | Producer |
