I did forget about the true ending which probably made it better than actively waiting.
It did make more sense here with Kirino not letting the news slip and actually leaving. Talking with Kyousuke one more time gave her the confidence to go. Makes sense for her to push herself and see how far she can go. Besides would be back in a while so wouldn't be terrible.
The ending with Kuroneko was definitely nice
. She definitely called him something different. With them in the same school can definitely throw up some flags.