You mean e-hentai.org?
But in their TOS they say that: "You may NOT:
- Post any kind of material that contains or depicts people who are or appear to be underage (even if they are borderline), nor galleries that claim to contain this kind of content (using keywords like "lolita", "preteen", "incest", "lolicon" or derivatives, even if they do not contain this)",
"- Post any kind of drawn or virtual material that violates the principles above. This explicitly includes, but is not limited to, computer-generated images ("rendered") and images created based on real people or pictures ("rotoscoped"). If it resembles or was obviously manufactured to resemble the real thing, this rule particularly applies."
I.e., as I understand, lolicon, incest and the same, even if it's drawn in cartoon style, are prohibited there.