Such stories are not acceptable. Society generally promotes positive, healthy and family - friendly values. Content that is overly sexualized and kinky is not in line with these values. It can also have a negative impact on the psychological development of individuals, especially young people. So, it is firmly rejected in a civilized society.
It depends on the context and the relationship between the couple. In a very private, trusting, and consensual relationship, sharing such stories might be a form of sexual communication. However, it should always be within the boundaries of respect and legality.
The legality of free kinky stories is a complex matter. Some stories that are considered kinky may simply be exploring unique or alternative relationships or ideas in a fictional and consensual way within the story. These may be legal. However, if the story contains elements that are against the law, like promoting illegal sexual acts or violating ethical boundaries in a non - fictional way, then it is not legal. Also, if the story is using someone else's copyrighted material without permission, that's also illegal regardless of its 'kinky' nature.
Well, 'kinky sex fanfic' is basically fan fiction that delves into sexual themes that are considered out of the ordinary. It's controversial for several reasons. Firstly, from a legal perspective, it can be a violation of copyright as it uses established characters in sexual scenarios not intended by the original creators. Secondly, it can have a negative impact on the perception of the original work and its fan base. Some people might find it offensive due to its explicit nature and the way it twists the original characters' personas.