Manga Help

I can't remember the name of this yaoi manga.

It's about a uke that is the seme's editor and does not know that he writes about. The seme is an erotica writer that uses the uke as writing material. In one of the chapters, the seme inserts a charter and the uke is in a closet. I think that the seme does not use any of the research he did on him in one of his books.

I don't know if this will help anyone, but please tell me anything that comes to mind when reading this description.