Released as purchasable DLC on Steam.
Album was composed by and was released on February 12, 2021. Soundtrack consists of 25 tracks tracks with duration over . Album was released by SoftColors, Steam.
CD 1
| 1 | Vast Blue Sea -Japanese ver.- | | |
| 2 | the town we live in | | |
| 3 | a world forgotten | | |
| 4 | march of the waves | | |
| 5 | ivory flower | | |
| 6 | fighting spirit | | |
| 7 | spunky youth | | |
| 8 | wonderland | | |
| 9 | waves in the blue | | |
| 10 | aria to the stars | | |
| 11 | aquamarine skies | | |
| 12 | unforgettable memories | | |
| 13 | mischievous hour | | |
| 14 | fractured truth | | |
| 15 | withering heart | | |
| 16 | tranquility | | |
| 17 | monster | | |
| 18 | home sweet home | | |
| 19 | battle cry | | |
| 20 | mother | | |
| 21 | Vast Blue Sea -English ver.- | | |
| 22 | So Spiragnor -mermaid ver.- | | |
| 23 | So Spiragnor | | |
| 24 | a somber light | | |
| 25 | Boku Dake no Furusato | | |
