I tried the demo on mGBA, and I like it so far; the main character is really cool, and I LOVE the beautiful world you've created.
I don't know if it's my emulator or what, but sometimes, the buttons seemed not to respond. When I tried to pick up the Polar Edge the first time, it didn't work, but I managed to get it after coming back. I also couldn't continue or end game from the game over screen; only the d-pad worked.