I don't think it's a very prevalent type of fanfiction. Fanfiction communities usually deal with more general and acceptable themes such as the growth of characters, different story arcs for the characters from the original work, or exploring new relationships between the characters. This specific topic might be considered a bit too niche or inappropriate for many platforms.
There might be some out there in the vast world of fanfiction, but it's not something that is typically mainstream. Most fanfiction focuses on other aspects of the source material like relationships, adventures, etc. rather than this particular topic.