Track 7 "Royal Guard" is a blatant rip off of...another song done by Yamamoto.
"Eye to Eye", a vocal song from Yu Yu Hakusho.
https://www.youtube.com/watch?v=V1GRgl2Oscs
https://www.youtube.com/watch?v=blkFqdjsn5U
It's not even a subtle nod, it's literally the same song except without lyrics.