It isn't actually referring to the
Asura Path/Demon Realm.
I added my own translation. With the exception of 4-5 tracks, the rest are quite obvious. M-15 and M-22 are references from the manga, while M-09, M-13 and M-14 — I translated them to sound more, er,
natural.
I left the old list intact, so if you think that's better, I'm fine with it – you can delete mine.
P.S. For track M-15 ["Zutto Miteta"] — credits to Yagami1211 and Narutofreak1412 from NarutoForums for pointing out that it was a reference to a particular manga panel. The translation "Always Watching" was suggested by Yagami. The rest of tracks are my own translations (the non-obvious ones).