Aoi's voice was grating at first, but after a while I got used to it. It's actually kind of cute. That's teenager Aoi though. I still cannot take kid Aoi.
The show itself was a bit more ecchi than I expected. There were some funny moments here and there that kept me somewhat interested, but the last part did its job and hooked me in. The atmosphere of the show definitely wasn't what I was expecting, but I think I'll stick with it and see where it goes. Plus I want to see the 10 year old (Hinako) and how she's going to play a part
Here's the ED -