What an awesome idea, really unique, and a great take on the theme. This is the game equivalent of rubbing your belly in circles with one hand whilst tapping the top of your head with the other, and I love it.
It took me an embarrassing long time to figure out how to play it. I realized based on the description and the screenshots that I needed to do something with the left two bars, but I only accidentally discovered that you have to start at the purple dots. Maybe add this in the description? Would probably help a lot of people :P
Overall great submission, lovely vibe, and indeed a great dedication to the Nintendo DS era of stylus games!