Wow. I made an account just to comment on this game.
I love it! What a treat: the dreamy atmosphere, Moon's wholesome personality, the hopeful and cathartic tone. Very invigorating for a short and cryptic work of fiction. Your writing shows real talent and inspiration, and the simple art style is cute and suits the narrative.
I don't think I can figure out exactly who/what Moon is or the world she inhabits, maybe some kind of connecting spirit living in a world of sentiment; at some point, she seems to be speaking for someone else, whom the player character knows.
I hope you do continue to develop this story and this style, I'm interesting in the larger world in which you see this transpiring.