It's the first time I post with a name instead of anonymous, but I have been following Drabok since the beginning and I'm a great fan of his artwork.
It's really been bad news the possibility of not been able of posting at Gurochan anymore.
I hope it will not become real at last.
Anyhow, I think there is a site where it is possible to post this kind of art: https://lolibooru.moe/
There are tons of 3d loli pics posted there.
And on their rates they name specifically guro and torture. I copy and paste:
"Lolibooru has three ratings: Rating:Safe, Rating:Questionable, and Rating:Explicit. Broadly speaking, these categories are:

Rating:Explicit: For pornography — images containing explicit sex, gratuitously exposed genitals, or that are otherwise pornographic.
Rating:Questionable: For images that may contain some non-explicit nudity or sexual content, but that aren't quite pornographic.
Rating:Safe: For everything else. Note that rating:safe does not mean safe for work and may still include "sexy" images containing cleavage, panty shots, skimpy bikinis, and so on.

Ratings only apply to sexual content. Violence, gore, or profanity do not affect an image's rating. Note also that ratings do not say how "family friendly", "kid safe", or "offensive" a picture may be. This is explicitly not a goal. Lolibooru users are assumed to be responsible adults and the ratings are there only to help them choose the content they wish to see.
Explaining the concepts, they say:
General: guro
Guro is a Japanese term derived from the English word “grotesque”. It is a genre of art dealing with themes of gore, mutilation, disfigurement, extreme violence or something that's just weird beyond comprehension (though the last one is considered an archaic definition).

Guro does NOT simply refer to violent or bloody imagery, but in fact EXTREME GRAPHIC violence. Do not use this tag for images where the blood tag would suffice.
See https://lolibooru.moe/wiki/show?title=howto%3Arate
for more information.
I think your art, Drabok, could fit perfectly there.