[depa]

I haven't find a post on the database that speaks about this soundtrack, so I'm sorry if it was discussed before.
Did Naoki Kodaka really compose all tracks? Is the a definitive source for this?
Noboyuki Hara and Shinichi Seya are only sound programmer, but who are MARUMO & MABOCHAN that appear also with the others three in the music staff at the ending of the game?