This soundtrack doe snot cover both movies music entirely.
It misses one track from the first movie, and A LOT of tracks from the second movie.
Although the movies show more composers for music.
Shinji Kinoshita (second one) and performed by Hi King
second movie:
Music: Hirokazu Ohta
Composed/ Arranged: Hirokazu Ohta & Shinji Kinoshita
Performed by HI KING
I assume the Shinji Kinoshita tracks are the unreleased ones, since the soundtrack says nothing about him at all.