The concept of the game is immediately a lot of fun! It reminds me of Mega Man Battle Network if combined with Touhou - and it plays just as well.
The visuals also stood out a lot. The floating animations are fun to watch, and I was impressed by the way that the speech bubbles follow the characters as they float. That's not something that I see every day - and on top of that, the background details are a fun easter egg.
I can tell that you two really enjoyed making this, and it shows. Incredibly well done!