Nice work, K! This is a very fine, well produced piece. The melody is nice, the repeating note pattern is great. But I like the progression most of all. The slow build gets me right in the feels, and the dieoff progression doesn't bore me despite how long it is... it feels like a continuing, dynamic story, even after the climax.
I feel like the drum transition is overused during the second half of the piece, but it sounds great so I don't mind. :P
The melody line that starts at 03:05 sounds more up-front and dry than any of the other melodic instruments in the piece. That feels a little off to me.
LMMS-chan is proud of you, and I am too.