a letter of challenge ORIGINAL SOUNDTRACK
| Published by | sdhizumi |
| Release type | Game Soundtrack - Official Release |
| Format | 1 Digital - 5 tracks |
| Release date | June 29, 2020 |
| Genres |
| 1 | town | ||
| 2 | battle | ||
| 3 | end | ||
| 4 | bad end jingle | ||
| 5 | good end jingle |
| Published by | sdhizumi |
| Release type | Game Soundtrack - Official Release |
| Format | 1 Digital - 5 tracks |
| Release date | June 29, 2020 |
| Genres |
| 1 | town | ||
| 2 | battle | ||
| 3 | end | ||
| 4 | bad end jingle | ||
| 5 | good end jingle |
