Well, in fanfiction, anything can happen. Just because it says Harry is Uryu's brother doesn't necessarily mean it's going to be a traditional brother relationship. It could be a metaphorical brotherhood, or it could be a result of some crazy plot device like a cross - over between two different universes. So, it really varies from one fanfiction to another.
In fanfiction, Blake's pet could be a key to unlocking new powers or abilities for her. Maybe it has some sort of ancient magic that, when combined with Blake's own skills, allows her to access a new form of combat or a special ability. This would create exciting new storylines and developments in the fanfiction.
Naruto is devastated. He feels a huge void in his heart. Jiraiya was the one who believed in him from the start, and his death makes Naruto question a lot of things. He might even start to doubt his own strength for a while.
In fanfiction, Sasuke's realization of Sakura's pregnancy can be filled with drama. He might question his own ability to be a father. However, his love for Sakura would drive him to overcome his doubts. He could start learning about pregnancy and child - rearing, and his relationship with Sakura would become more affectionate and caring as they anticipate the arrival of their baby.
In many Pokemon fanfictions about Ash's Charizard's return, it often brings a sense of excitement and nostalgia. Usually, Charizard comes back stronger than ever, ready to help Ash in his new battles. It might have learned new moves during its time away, which makes it an even more formidable partner for Ash.
No. Using the word'slut' is derogatory and disrespectful, especially when applied to a character in a fanfiction context. It is not acceptable to use such offensive language in any form of creative work.
Well, it's not likely to be a very popular concept. The idea of one character being another's slave goes against the positive and equal relationship that many fans expect in the 'Twilight' universe. Most fans are drawn to the romantic and somewhat equal relationship between Bella and Edward in the original story.