hey, i'm having a few problems deciding with which network to stay with, I tried Adult ad world but haven't gotten much result (as in the pay is 0.1?...) and the popunders script does not work =/ (had to switch to popads and it's awesome)
I'm using a combination of juicyads/blacklabelads/exoclick for my hentai site. Check the link in my sig for a comparison and reviews of these networks.
Most PPC don't allow hentai sites, why not try advertising your website at other related communities/blog and where people enjoy viewing them? If you other good content, I'm sure naturally people will come back for more, if you know what I mean. =)