Nice nod at Kirino bashers, right down to the 'ridiculous heroine' and tsun/dere ratios....
It was fun to watch them going about their routines - Kirino's imouto-con goes from cute to slightly creepy, Kuroneko's sister was adorable, a glimpse of Saori's real appearance almost gave me a nosebleed.
Kirino wrestles with being more dere with Kyousuke, but fails in the end... oh well. Glad they haven't forgotten Ayase too.