This is the kind of music that reminds me of all the great stories, movies, and JRPG's I grew up with.
While I don't believe they ruin the song at all, and am still rating 5 for the composition and your skills, there are two moments where the song kind of pushed me out of the flow and I figured I'd mention them in case you were interested in the feedback.
The first is at 1:19 where there's the fade out, but before you get accustomed to it having faded out it leaps back in. If the instruments faded in as a counterpoint to the fade out, it would be less abrupt. An alternative would be to fill a little space before the instrumental return with some airy instruments for a second or two, like your phantoms' whispers, then the instruments come back in.
The second was from 2:29-2:31 the low notes of the piano seemed to double in volume compared to the rest of the ending, for only 3-4 notes, but they didn't make a statement or anything they just got louder. I was wondering what they were going to do, but then they just faded to the background again.
Overall, love the song and these two moments won't stop me from listening to it again.