Nice take on DDR.
To be honest, I almost gave up after losing the first game 3 times in a row, I think it's a bit of a tough game to get started on.
One thing I found a bit jarring was that the arrows come onto the screen quickly and then slow down - but for a rhythm game, that feels weird because you rely on the speed being constant so you can anticipate when you need to press the key, so I'd recommend getting rid of that effect, it looks nice, but is hard to work with.
Eventually, I figured out that playing two-handed with one hand for L/D or U/R made playing a lot easier.
I loved the variety of graphics, the portraits were cool.