I love his voice! It's so soft and soothing, and the art and animation are very calming and pretty, too. Awesome job on this song! The only tip I have is that his pronunciation is a little bit off on "hi"; the "h" sounds a little too hard and has a bit of a rasp. So maybe you could try to soften that a bit in future banks. But other than that, it sounds really good. ^_^
*Edit* I saw that you mentioned having to re-record some phonemes in the video description already. Sorry I didn't notice that, you totally didn't need that tip then x_x