KAMUI Original Soundtrack - VGMdb (http://vgmdb.net/album/40729)
SISM-0001 | RefleX ORIGINAL SOUNDTRACK++ - VGMdb (http://vgmdb.net/album/11381)
SISM-0002 | ALLTYNEX Second ORIGINAL SOUNDTRACK - VGMdb (http://vgmdb.net/album/21956)

As usual, preferred quality is VBR V0.