Fun Facts regarding "Doki Doki":

* You can't be a DDR fan and not chart a Smile.DK song; this was bound to
  happen eventually.

* DDR fans will like this song's Hard chart, and those who want to transition
  to ITG will enjoy the Expert chart, which uses some minimal rolls and
  hands.

* The major thing with this song is the occasional slowdowns; they'll probably
  get you the first few times, but will get easier on future plays.  Look
  out for the uber-slowdown on the last 3 notes!