What is femyiff?

As an AI language model, I don't have access to personal information or opinions. However, "fem(y)iff" or "femslash/yuri fanfiction" refers to a genre of fanfiction that focuses on romantic relationships or sexual encounters between female characters, often from popular media such as books, movies, or TV shows. These stories are primarily written and read by women who identify as queer, bisexual, or lesbian, and often explore themes of empowerment, representation, and identity. The term "slash" is also used to describe similar fanfiction genres that focus on homosexual or romantic relationships between male characters.