Has there ever been official pornographic media for an anime and/or manga series? I've been wondering about this for a while now. With how perverted some anime and manga are without ever crossing into pornographic content territory, were there ever any anime or manga with official pornographic media? Example: a little spinoff series of sorts of a regular anime/manga, with one or two episodes focusing on characters bumping uglies mostly. Bonus points if those "interactions" are officially canon.

Obviously, I'm not talking about something like Dragon Ball or Pokémon. That's just weird. I'm talking about anime and manga that are already adult oriented, which already have some light sexual elements or sexual overtones, where it would make sense for official pornographic content to exist.

I wouldn't be surprised if some companies already tried to squeeze some extra bucks from the more fanatic and perverted parts of the fanbase, while those uninterested in the content never have to see it if they don't want to.

I'm specifically talking about series(es?) that started out relatively non-perverted and whose main source stayed relatively tame - no intercourse is ever shown directly, but it could be implied. VNs that had perverted elements and were turned into anime/manga later do not count, but feel free to give some examples if you want to.
To answer the question as posed:  largely, no.  A work will make its intentions clear up front.

An anime or manga creator typically shies away from playing both sides, and will either commit to having their work be either tame or explicit.  That is to say, on one side, you'll have a work which is largely non-sexual and then has a few fanservice scenes (for example, The Electric Tale of Pikachu), or work which is largely dedicated to pornography (examples omitted, for...reasons.)

To call some attention to a point made here:


  I wouldn't be surprised if some companies already tried to squeeze some extra bucks from the more fanatic and perverted parts of the fanbase, while those uninterested in the content never have to see it if they don't want to.


Dakimakura, and some of the designs you get with them, largely fill this void, even if the work is non-pornographic (as is the example prior with KonoSuba and Oregairu).  The same is true of other fan-oriented goods, like figurines in various poses and attire, and sales of certain articles of clothing.

(I think at one point, Sailor Moon had released a line of lingerie.  I neither judge nor ask questions.)

I do want to highlight though, that this is likely being driven largely by the companies and not necessarily the creator themselves.  I don't deny that some element of the creator's participation is necessary, though.