Nice job!
I like the creative take on the theme, I haven't seen any other games like this one, which feels like a rarity for this jam.
Ill say my hand is definitely feeling tired after a session of this, so I don't think it could be played for very long periods of time. But I think there could be some options to alleviate that. I think the main issue is having to keep clicking again whenever you mess up a circle, maybe having a key you could press that would act as you clicking could suffice. Or the game could automatically start drawing you a new line a little bit after you hit something. I will say I was tempted to get my drawing pad out and try it with that.
This does remind me of the Pokemon Ranger series, and I wonder if some elements could be taken from those games for this. Maybe some enemies or bosses require you to draw specific shapes around them, (and then move slower to compensate for the added time to draw).
I see in your Gifs you managed to get some pretty long loop streaks going, but I always found it pretty hard to get them going to more than 2-3 loops. So maybe having the trail decay faster so you don't get caught as easily could be a power-up you can get.
Im a sucker for the neon aesthetic, so Im happy to see it here
Good work!