Berigoo!
I definitely didn't expect a Numenoko art style. The artist had done a splendid job!
Unfortunately, however, the art style more or less carries the entire game. The Cirno boss fight isn't particularly interesting, and you can't really interact with anything else. If you do make a full game with this style, I would love to see the style reach its fullest potential with lovely gameplay.
(I find it funny that even though Koishi's trying to get the corndogs, Satori ends up feeding her flan in the end.)