A really awesome concept! The art is beautiful and looks proper cute, the music is also really catchy! Had some really nice SFX as well, and the story was interesting. Smashing through stuff with the bubble ability feels real good! (I also really, really love your main menu)
But the games flow is really not there. The cooldown on your ability just takes far, far too long and leaves you just sitting there, just waiting. Significantly decreasing the wait or adding more stuff that you can do without the bubble would help alot with that.
Otherwise a really awesome game!