If anyone could provide me with this soundtrack, preferably in FLAC format, I'd be eternally grateful. Unfortunately, it doesn't exist as a disc-based soundtrack on vgmdb, or maybe not at all, so I can't provide you with much detailed information.

This was a DLC released, and I quote "first as a bonus with the limited edition of Infinite Battle". So it's possible it exists downloadable now.

Ah, crap. Could someone please move this to game music requests? Didn't notice I posted it in the wrong sub-category until now?