Now that Kuroneko and Kyousuke are officially dating, Ruri certainly seems to be taking her role of girlfriend seriously... perhaps too seriously, it could be said.
While Kirino is very much keeping her council after her brother announces that he's dating her friend, Kuroneko is pulling out all the stops from creating new outfits to ensuring that Kyousuke learns as much about her as possible... indeed, it's almost a little creepy how much of their relationship Kuroneko already has mapped out. Maybe she should change her name to Ringo...
As the summer persists, so the pair spend as much of their time as possible together, despite some potentially interference from Kuroneko's sisters and the uncomfortable feeling that Kirino is now little more than a spare wheel in proceedings - not good news considering that Kuroneko seems determined to ensure that Kirino and Kyousuke end up happy in one another's company. But what lengths is Ruri willing to go to to ensure the happiness of her friends?
The answer to that question seems to be "incredibly crazy lengths" judging by the final scene of the episode, which is a bit of a downer after a really enjoyable instalment - Ruri's sisters (and the family's middle sister Hinata in particular) were great, and Kuroneko herself did a lot to ensure the episode's entertainment value in spite of some odd behaviour on her part. I'm intrigued to see how this behaviour is explained, but I fear I might not like it - still, I'm not going to let that eclipse perhaps the most fun episode of this second season of Oreimo so far, that finally managed to seem to remember how its characters are supposed to act.