SHDC-0001: LostPassage ORIGINAL SOUNDTRACKS

[Hellacia]

Does anyone know who composed the BGM for this game? Was it both composers? I'm trying to find information about this game and just frustratingly failing ;__;

(Oh btw I added an alternate title and left off the ス even though it's "original soundtracks because I can't actually find it written that way in any websites or on the couple of scans we had but I still wanted to add the Japanese for searching help.)