There could be several reasons. Copyright holders may worry that fanfic could potentially create confusion in the market regarding the official storylines. Additionally, if the Elain fanfic has a history of containing offensive or inaccurate portrayals of the character or the associated world, this would be a valid reason for a ban. Another aspect could be that the fanfic is diverting too much attention from the official releases, and the creators want to refocus the audience on their own content.
Maybe there are issues with the content of the Elaine fanfic. For example, if it contains offensive language or goes against the original creator's vision, someone might want to ban it.
One reason could be copyright concerns. If Ginji is from a copyrighted work, the owners might want to protect their intellectual property and not allow others to create derivative works like fanfics without permission.
Someone might want to ban it because 'lemon' fanfiction usually contains sexual or suggestive content. If Ban and Jericho are from a series aimed at a younger audience or has a general family - friendly image, such content could be seen as inappropriate.
I'm not entirely sure without more context. 'Ban' means to prohibit or forbid. 'Fanfic' is short for fan fiction, which is fictional writing by fans about characters or settings from a particular work. Maybe it means banning fan fiction related to a character named Elain.
One reason could be copyright concerns. The original creators might worry that fan - created original characters in fanfiction could potentially step on their intellectual property rights. Another reason might be to maintain the purity of the original story. If too many OC fanfictions are out there, it could dilute the essence of the original work.
One reason might be that some fanfiction about Ginji was getting out of hand. Maybe it was spreading misinformation about the character or the story world, so they decided to ban it to protect the integrity of the original work.
One reason could be copyright issues. If the fanfiction uses elements from an existing copyrighted work related to Elaine without permission, a ban might be called for.
To protect the youth. Erotica is not suitable for children and young people, so banning such stories can keep them away from inappropriate content.
Another reason could be that the horror stories contain disturbing or inappropriate content that the person doesn't want to be associated with publicly. They may have received the stories from an unknown or untrusted source and want to keep them hidden until they can decide what to do with them, like whether to delete or further investigate.
Maybe for self - promotion. If you're an artist or a public figure, having your name in a story can increase your visibility. It can also be a great way to leave a personal mark, like a memory or a dream you want to preserve in the form of a story.