Well, if the author wants to make it more acceptable, they could add a proper backstory. For example, if the sister was somehow involved in something that Naruto thought was wrong, but later he realizes she had good intentions. This would add depth to the relationship.
The author could also rework the concept to be more about a misunderstanding. Naruto might initially seem to hate his sister, but it turns out it's all a big mix - up. This way, it can still have the drama but also be more in line with Naruto's forgiving nature.
It could be that the fanfiction creates a forced or contrived situation. Naruto is a character known for his determination and positive energy. A plot where he hates his sister might not fit well with the overall Naruto universe. It might be a way for the author to create drama in a rather unappealing way that doesn't resonate with the essence of the Naruto character.
One way is to add a common enemy. By introducing a powerful foe that both Naruto and Rias have to face together, they can gradually overcome their initial hatred. For example, a new, extremely powerful demon or a group of rogue ninjas that threaten both their worlds.
It can't really be made acceptable. Sexual content doesn't belong in fanfiction related to Gotham. The focus should be on the crime - fighting, the characters' development, and the overall dark and gritty atmosphere of Gotham.
One way is to add more backstory to both Tony and his daughter. By exploring their pasts, we can understand better why he might hate her. For example, if there was a past incident that led to a misunderstanding between them. Another way is to introduce a third party that can either make the situation worse or help resolve it. A character like Pepper Potts could try to mediate between them.
First, the author could add a lot of backstory to explain Sasuke's behavior in a more sympathetic way. For example, if Sasuke was being controlled by an external force and he later realizes his mistake and tries to make amends. This would make it less of a straightforward 'abuse' scenario and more of a tragic misunderstanding.
It can't really be made acceptable as the concept of slavery is fundamentally wrong. However, if one were to re - concept the idea completely away from slavery. For example, if it was about Hermione helping a group of oppressed women gain their freedom and rights, and then building a positive relationship with them, that would be a different and more acceptable story.
To make 'creepy my little pony fanfiction' more acceptable, one approach could be to tone down the 'creepy' factor. For example, if there are elements that are too dark, like a spooky setting, make it a bit more light - hearted. Maybe add some humor to it. Another way is to ensure that the core values of the My Little Pony series, such as friendship, are still present, even if it's a 'creepy' version of the story.
It can't. Unprotected sex is a dangerous and inappropriate topic, and promoting it in fanfiction is not acceptable.
First, it should be written with respect. Avoid using the concept of brain damage as just a shock factor. Second, do proper research on how to represent someone with such a condition, even in a fictional magical setting. Third, make sure the story has a positive message in the end.
One way is to focus on the aftermath. Show how the experience of corporal punishment makes Harry more determined to prove himself or change Snape's view of him. For Snape, it could lead to self - reflection on his teaching methods. Also, make sure to set the context clearly. Maybe Hogwarts has some archaic rules that Snape is reluctantly following, but he starts to question them because of his interaction with Harry.