Released at character1 2019.
BGM by Emotional Union
M2.12 - Opening Theme
Lyrics: 松長暁生
Composition/Arrangement: Rinta Aoki from STRIKERS
Vocal: Faylan
M1.07 / 2.13 - Ending Theme
Lyrics: 松長暁生
Composition/Arrangement: NAMBO from STRIKERS
Vocal: Mitsuki Nakae
Album was composed by Emotional Union / NAMBO / Rinta Aoki and was released on April 29, 2019. Soundtrack consists of 28 tracks tracks with duration over . Album was released by Eushully.
CD 1
| 1 | 数奇なる宿命 | | |
| 2 | 知られざる過去の記憶 | | |
| 3 | 戦場に流れる不穏な空気 | | |
| 4 | 生死の狭間を生きる者たち | | |
| 5 | 力こそが正義 | | |
| 6 | 緊張を奏でる報せ | | |
| 7 | Ancient Guardian Game size | | |
| 8 | 人知れず生きる者たち | | |
| 9 | 自由を掴むその日まで | | |
| 10 | 閃光交わり轟く戦場 | | |
| 11 | 恐るべき災怨の調べ | | |
| 12 | 人知れず消ゆ | | |
| 13 | 迎撃都市グラセスタ | | |
| 14 | 征野にある平時 | | |
| 15 | 想いが通じ合うその時に | | |
CD 2
| 1 | 闇を照らす青白き光 | | |
| 2 | 神聖なる力に守られし地 | | |
| 3 | 戦士たちの休息 | | |
| 4 | 堕ち行く者へ悪魔は微笑む | | |
| 5 | 地下に眠る不可思議な空間 | | |
| 6 | 渦巻く殺戮の宴 | | |
| 7 | 巡り逢う刻 | | |
| 8 | いざ、決戦の地へ | | |
| 9 | あの日の誓いを胸に秘め | | |
| 10 | 認められざる力 | | |
| 11 | 二律に魅入られし徒 | | |
| 12 | Brightly horizon | | |
| 13 | Ancient Guardian | | |
