I thought Ai's lil' sis was too old for blush stickers. Those twintails look really good on her.
Volly-bu is way too obsessive and possessive of Ai. I wish she would stop trying to monopolize & perv Ai and focus her attention on Ai's sister instead. At least the sister would reciprocate her feelings and wouldn't need to use Volly-bu's lil' bro as a replacement goldfish. Otherwise Volly-bu will feel more and more like a burden to this series.