Well, it can change the power dynamics. A female Eragon might not rely on brute strength as much as a male one. She could use her wits and charm more to get things done. For example, in diplomatic situations, she might be able to smooth - talk her way through better.
The relationships are also greatly altered. Naruto's friendships, especially with Sasuke and Sakura, would be different. If Naruto is a girl, there could be a potential for a romantic relationship with Sasuke that was more complex than in the original. Also, the way the village views Naruto would change. A female Naruto might face different levels of discrimination or over - protection from the villagers compared to the male version.
In 'Naruto Possessed' fanfictions, it often changes the story by making Naruto's character arc more complex. For example, if he's possessed by a malevolent force, his relationships with his friends like Sasuke and Sakura might become strained as they try to figure out what's wrong with him. His goals might also shift from protecting the village to something else dictated by the possessing entity.
The 'Naruto Chosen One' concept can also change the relationships in the story. If he is clearly the chosen one, some characters may be more eager to follow him, while others may be jealous or afraid. For example, Sasuke might have a more complex reaction to Naruto's new status. He could see Naruto as a threat to his own goals or, on the other hand, be more motivated to compete with him on a different level.
In fanfictions, Harry's emancipation often means he can act more independently. For example, in some, he doesn't have to wait for Hogwarts to start learning magic. He can explore his powers on his own terms, which speeds up his development and changes the power dynamics with his enemies.
In fanfictions with 'hiccup is part dragon', it completely transforms the power dynamics. Hiccup now has abilities like flying without Toothless or breathing a small amount of fire. This changes how he approaches battles and threats. He might be seen as a freak by some vikings, which leads to him having to prove himself even more. It also means his bond with Toothless could be different, as they are now more alike in a way.
The abuse concept is a great way to deepen the plot. It can create a sense of mystery too. Why was Draco abused? Who was responsible? As the story unfolds, the answers to these questions can lead to unexpected twists. And it also affects the relationship development. Hermione may start off pitying Draco because of the abuse, but as she gets to know him better, it could turn into something deeper like love.
In some fanfictions, the 'Naruto Fox Sage' concept might be enhanced by giving Naruto more control over the fox's chakra. For example, he could use it to perform new jutsu that were not possible in the original series. In others, the Fox Sage mode might have different physical appearances or side effects. Sometimes, the fanfictions might also explore the spiritual connection between Naruto and the Fox Sage in more depth, like Naruto being able to access the Fox Sage's memories.
The 'Godlike Magus' concept changes the relationships in the story. Other characters may view the Godlike Magus character with a mix of awe and fear. Enemies might be more cautious, and friends might rely on them more. Also, it can change the power balance in the wizarding world. Institutions like the Ministry of Magic may feel threatened by this newfound power and try to control or suppress it.
In fanfictions, when Harry is in Ravenclaw, his relationships often change. He might be closer to Ravenclaw students like Luna Lovegood earlier. His focus on academics would be more pronounced. For example, he could be more interested in the library and research.
The concept of Ciel mpreg in fanfiction completely alters the story's perception. In the original, Ciel is a strong - willed character focused on revenge. But in this fanfiction scenario, it can turn him into a more sympathetic and complex figure. His priorities might shift from just revenge to also protecting his unborn child. And it also affects how other characters interact with him. They might see him in a different light, either with more pity or more judgment. This can lead to a very different kind of 'Black Butler' story than what we're used to.