HOLY SHIT THAT WAS CRAZY AWESOME.
EDIT: Is this p-p-p-p-plot?!
EDIT 2: Also, I love the way the Demon Sisters roll their r's when they say "rules."
EDIT 3: Watched the second half of the episode again. Seriously, these action scenes take my breath away. And the music just keeps getting better.
EDIT 4: I like how one of the Youtube videos of the Demon Sisters' transformation sequence already has over 150 comments.