Directed by
| Jang-Hoon Lee | ||
Writing Credits (in alphabetical order)
| Takuji Ichikawa | ... | (novel) |
| Su-jin Kang | ... | (as Soo-Jine Kang) |
| Jang-Hoon Lee | ||
Cast (in credits order)
| So Ji-seob | ... | Woo-jin | |
| Son Ye-jin | ... | Soo-ah | |
| Rest of cast listed alphabetically: | |||
| Ko Chang-seok | ... | Hong-goo | |
 |
So-Hyun Gam | ... | Ji-Ho's classmate |
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Kim Hyeon-soo | ... | Soo-ah (young) |
| Lee Joon-hyuk | ... | Choi | |
| Seo Jung-yeon | ... | Seo Bin's mom | |
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Min-Sung Lee | ... | Seo-Bin (young) |
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Uhm Seo-Hyun | ... | Na Eun |
| Park Seo-joon | ... | Ji-ho (adult) | |
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Lee Seung-joon | ... | Past physical education teacher |
| Son Yeo-eun | ... | Hyun-jung | |
| Bae Yoo-ram | ... | Hong-goo (young) | |
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Lee You-Jin | ... | Woo-jin (young) |
Produced by
| Bumsu Lee | ... | producer |
Cinematography by
| Cho Sang-yoon | ... | (as Sang-yoon Cho) |
Stunts
| Dae-won Yoon | ... | stunts |
Music Department
| Hyun Seo-won | ... | composer additional music |
