Performed by Teru Tendo (CV: Shugo Nakamura), Hideo Akuno (CV: Kentaro Kumagai [熊谷健太郎]), Suzaku Akai (CV: Takeaki Masuyama), Amehiko Kuzunoha (CV: Jun Kasama [笠間淳])
M-01
Composer: Tomoari Taguma
Arranger: Tomoari Taguma
Lyricist: Aira Yuuki
M-02
Composer: Akihiko Yamaguchi
Arranger: Akihiko Yamaguchi
Lyricist: Erica Masaki
Album was composed by Akihiko Yamaguchi / Tomoari Taguma and was released on May 09, 2018. Soundtrack consists of 3 tracks tracks with duration over about 15 minutes. Album was released by Lantis.
CD 1
| 1 | 永遠(とわ)なる四銃士 | 04:14 | |
| 2 | MEET THE WORLD! (FRANCE Ver.) | 04:53 | |
| 3 | 永遠(とわ)なる四銃士 (Off Vocal) | 04:12 | |
