Welp, downloading the episode.
In the meantime:
Spin-off manga featuring Kuroneko is announced. The title is "Ore no Kouhai ga Konnani Kawaii Wake ga Nai". :v
EDIT: LOL "I like you as much as your sister likes you"
Guess that's 'not at all'.
OH IF ONLY YOU KNEW, YOU POOR SON OF A *****