I liked it very much. It's nice to hear how the sound effects bind on the rhythm: there are some pieces of ambient rain sound that last exactly a measure, like till 1:45, where they intentionally stop, to let the music give the focus on the beat that starts becoming lively. It's generally very nice, but if you listen it a couple of times, you can notice some carefully worked details like that.
Of course you couldn't help but placing another big powerful emotional solo. :) You actually enjoy this, don't you? :)
Just a quick note on this last one: while in the solo, you use two successive instruments, a square-like synth, and a guitar and/or its harmonics based one. The soft spot is, that they sound a bit like each other, and the first time I heard it, a thought passed "that solo lasted a bit longer than usual, didn't it?", it was just that I didn't feel the change at 2:12 strong enough to shift the sound's mood (expected something like if the square and the guitar are 'talking' to each other, and the square says something, and the guitar 'answers', instead here it simply 'confirms' what the square said). However after listening it again I felt it wasn't a real problem.
It's a shame I couldn't imagine easily of a night storm, because most storms here happen during the day. But after getting the hang of parts like 1:10, I got the feeling, remembered a recent night storm too. (But that one was, erm, quite violent in comparison with the song. Anyway :B)
Thanks again for this nice song. Sincerely, old fan (I've downloaded them all to have something to listen to while I'm reading. Yes, yes, Tiekondyrogha, Animation warrior theme, Darktronics, all, they're not bad, they were good - don't you ever say they were bad! Not one of them!) Live well and always be giving us beautiful songs to listen to.