Oxygen Destroyer by KARUT Overview Tag Appears on Blue Archive Original Soundtrack (Vol.2 Searching for the unknown truth) Blue Archive Original Soundtrack Vol.2 ~Searching for the unknown truth~ Blue Archive Original Soundtrack Vol.2 ~Searching for the unknown truth~ Blue Archive Original Soundtrack Vol.2 ~Searching for the unknown truth~ [Disc 2] Duration: 1:55 Playcount 27 Listeners 2