I'm not sure specifically as it could be a very unethical and inappropriate fanfiction. Fanfiction should generally uphold positive values and not promote offensive or vulgar content.
No, it is not appropriate. Fanfiction often has a wide audience, including minors, and such explicit sexual content is not suitable for general consumption.
No. Anal sex in public is not legal in most places. Public sexual activities are considered inappropriate and violate public decency laws. These laws are in place to maintain a proper and respectful public environment.
Another type could be fanfictions that put Clarke in new adventures, like exploring uncharted territories in the world of the original story. This can show her resourcefulness and courage in a way that is both interesting and respectful to the character.
The 'Hotel Transylvania' series is mainly aimed at family - friendly entertainment. Fanfiction should also uphold positive values rather than exploring such inappropriate themes.
There is no factual basis for spreading untrue'sex stories' about Emilia Clarke. Such stories are often baseless rumors that can be very disrespectful to the actress. We should focus on her work and talent rather than believing and spreading unfounded gossip.