Ever visited a site and thought to yourself that you've died and gone to hentai heaven? Well that might not be something you've experienced, but it's a possibility here on Hentai Haven! The site was established quite a few years ago and has various areas that are perfect for people to find anime and manga material of an X-rated nature. Oh, it's chock full of futanari too which is specifically categorized as such to make it easy and convenient for you to source.
So when you hit the tag link I've provided you to the futanari content, you can sort the uploads based on their date, number of views, popularity and comment count. The site functions as a streaming service by the way, so it's mainly videos that you're going to get here. The streaming appears to be in 480p and you can download in 720p if you wish. They also provide a number of mirrors for their content in case one goes down.
Hentai Haven appears to be more of an enthusiast destination for content. Futanari videos are aplenty here and I recommend you check it out if that type of thing tickles your fancy.