 Canada |
|---|
| Date | Certification | Type | Notes |
|---|---|---|---|
| 2017-07-30 | Premiere | Fantasia International Film Festival |
 China |
|---|
| Date | Certification | Type | Notes |
|---|---|---|---|
| 2017-06-17 | Premiere | Shanghai International Film Festival |
 Germany |
|---|
| Date | Certification | Type | Notes |
|---|---|---|---|
| 2018-06-02 | Premiere | Nippon Connection Film Festival | |
| 2018-10-30 | 12 | Theatrical |
 Hong Kong |
|---|
| Date | Certification | Type | Notes |
|---|---|---|---|
| 2019-03-22 | IIA | Theatrical |
 JapanOriginal Country |
|---|
| Date | Certification | Type | Notes |
|---|---|---|---|
| 2017-04-07 | Theatrical |
 Korea, Republic of |
|---|
| Date | Certification | Type | Notes |
|---|---|---|---|
| 2018-03-29 | Theatrical |
 Spain |
|---|
| Date | Certification | Type | Notes |
|---|---|---|---|
| 2017-10-06 | Premiere | Sitges Film Festival |
 United Kingdom |
|---|
| Date | Certification | Type | Notes |
|---|---|---|---|
| 2017-09-09 | 15 | Premiere | Glasgow |
| 2017-09-11 | 15 | Premiere | London |
| 2017-09-29 | 15 | Premiere | Kotatsu Japanese Animation Festival |
| 2017-10-04 | 15 | Theatrical | |
| 2018-06-25 | 15 | Physical | Blu-ray Disc, DVD |
 United States |
|---|
| Date | Certification | Type | Notes |
|---|---|---|---|
| 2017-08-19 | PG-13 | Premiere | AnimeFest |
| 2017-10-22 | PG-13 | Premiere | Animation Is Film Festival |
| 2018-08-21 | PG-13 | Theatrical |
