I like the animation, it's good. But the music is annoying. Seriously, what the **** is that music? And there is no build up to the sex scenes (even less than other hentai) so it makes the hentai hollow. The dialogue is so so bad, the main character is a thorn to the side, and the characters have no personality. A problem it has is that there's no portrayed-genuine reaction to anything at all; because there needs to be a "woah, this is happening" or any sort of reaction. It's a vital part of the enjoyment and this hentai lacks it. I would say: passon this one; there are many other hentai even from this studio, with better execution. The characters are supposed to have their own backgrounds like one sister is a bad girl the other is a good girl but this was portrayed so badly (or not portrayed at all), that both of these characters just end up feeling the same.