Fun Facts regarding "Shinryaku no Susume" (11/27/11-12/8/11):

* This is the season 1 opening for the anime "Squid Girl."  As the
  background picture and video indicate, the anime is much better than
  you might've first thought when you'd just heard the name.

* This is a fast-paced song.  It's pretty nuts.

* Hard is pretty straightforward and is very lyrical.

* Expert is full of seeing if you've grown tentacles of your own;
  it's full of crossovers, twists, and handplants, and has several
  triples as well.

* The other difficulties are also kinda hard for their levels.

* Note: I'm aware Squid Girl has gone into a second season by the
  time of this writing, and thus it has another OP ("High-Powered").
  However, I'm having difficulty determining who sings it; I'm
  figuring Ultra-Prism, but I can't be sure.