Another awesome episode.
Loved everything about it... the sibling grouping, the exchanging numbers with little sister's friend, Kuroneko taking her coat off thanks to Kirino, Kuroneko winning limited edition game and giving it to Kirino, them two then not being honest with they feelings and little sister's friend finding out her secret hobby therefore causing cliffhanger for next episode. Its all so great... can't wait for next week.
Edit: Oh yeah and yay for Manami being in the opening.