Tapas allows NSFW content as long as it's with artistical, diegetical and/or educational purposes, and you put it under the Mature Content warning. This is the line I'm quoting:
"Providing context and clarifying intent in the content title and description are important. For example, depictions of violence, sex, or nudity for diegetic, artistic, or educational purposes are more likely to be allowed than gratuitously graphic ones."
You can check it in here under the title "Mature Content":
Tapas knows that's what marks the difference between porn without plot and erotic art (which has a story behind, characters with feelings and personality, and their sexual intercourse is part of the natural flow of the story as it is).
Just warn people your work is NSFW wherever you mention or promotion it, so no-one that may not like that kind of content get in there and flag it.
If for any reason that happens, Tapas will email you asking you to hide it (cause they won't risk their business, that's also in their Terms and Conditions), and then you'll have to act consequently.
Before that? Just enjoy yourself doing the content you love 