Honestly very fun game, I love the concept where the chain reaction is the dashes and how you change how they work in your menu, and I love the artistic style when it comes to the level art and the background.
The things I would recommend is to add a hint button for each level if you're stuck because on the later levels I had no idea how to complete them with, so hints would be nice. The other thing that would be cool is for more music and/or an extended track of the original song, because the song got a bit repetative after you've played for a bit.
Besides that, this game was nice!