Authors often justify it through magical means. Maybe Harry discovers a long - lost spell that gives him a degree of control over Hermione's actions, but he uses it for what he believes is a noble cause like protecting her from a hidden danger. For example, if there's a dark wizard targeting Hermione specifically, Harry might use this control to keep her safe without her full knowledge.
Some fanfictions might try to justify it by re - interpreting Dumbledore's motives. For example, they could claim that his desire to use Harry as a weapon against Voldemort was a form of abuse, as it put Harry in constant danger without fully explaining the situation to him. But this is a very different take from the original series.
Authors often justify their relationship by showing character growth. For example, Draco might be shown to have changed from his prejudiced ways in the original series. They may also create a situation where Draco and Hermione are forced to interact and see each other in a new light. This could be through a common goal or a shared danger.
One popular 'Harry controls Hermione' fanfiction could be 'The Unlikely Bond'. In it, Harry might have some newfound power or knowledge that leads him to take a more controlling role in his and Hermione's adventures. Another could be 'Harry's Guiding Hand' where his leadership skills are amped up and he starts to direct Hermione's actions more. There are also some that explore this dynamic in a more magical experiment - based scenario where Harry's magic has an unexpected influence on Hermione.
Some exist because fans like to explore different power dynamics in relationships. They want to see how Harry, as a central and powerful character, can influence Ginny's actions and decisions.
Some authors justify it by giving Sakura a tragic backstory. For instance, if she was always overlooked or mistreated in her village, she might be more likely to be swayed by offers of acceptance from the enemy. It's like she's seeking validation from the wrong place.
Well, in a 'harry controls hermione fanfic', it might be that the author is exploring a different dynamic between the two characters. It could be a plot device to create new and interesting scenarios. For example, perhaps Harry has been given a magical object that gives him the ability to control Hermione's movements for a short time, and this leads to various adventures and challenges as they try to deal with this strange situation. It could also be a more psychological form of control, like Harry having some knowledge that he uses to manipulate Hermione's behavior in a way that moves the story forward.
Authors often use the contrast between Draco's Slytherin pride and Hermione's Gryffindor determination. For example, when Draco brags about something he can do magically, and Hermione immediately shows him up in a really understated but funny way. It's like she doesn't even have to try hard to make him look silly.
Some authors might justify it as a way to depict the full spectrum of human experience. Sex is a part of life, and by including these excerpts, they can show the physical and emotional aspects of relationships more comprehensively.
Writers often justify their relationship by showing character growth. For example, Draco might have realized the error of his ways after the war and Hermione, being the empathetic person she is, starts to see the good in him. This gradual change in their personalities makes their relationship seem more plausible.
Some writers justify it by creating a situation where Sasuke has to make a great sacrifice. For example, he might give his life to protect Naruto or the Hidden Leaf Village from an overwhelming threat. His selfless act in these scenarios is seen as a way to atone for his past mistakes and show his growth as a character.