Very impressive, especially for fanfiction. For the most part, I think that most DDR stories are based upon older, storyline-themed games, so it's rare to find a story for Hottest Party. I have HP3, so I have quite a few characters that wouldn't be there if you just do HP1 or HP2.

It was pretty original, and with interesting characters. I enjoyed the high school setting. If only others had your grammar ability and knew how to actually write.

I think you should continue this story. I would most definitely continue reading it.