One motivation could be for the sake of adventure. In fanfiction, Hermione might want to explore parts of the wizarding world that are off - limits to girls. By disguising as a boy, she gets the chance to do so.
She might also do it to prove a point. Maybe there's a belief in the wizarding society she's in that boys are better at certain things. Hermione, being the intelligent and headstrong character she is, disguises as a boy to show that she can be just as good or better. She wants to break gender stereotypes and this is her way of doing it. This can add depth to her character and make for an interesting fanfiction plot.
There's a fanfic where Hermione disguises as a boy to solve a mystery at Hogwarts. The plot thickens when her friends start to suspect something's off.
Perhaps it's about creating a sense of drama and high - stakes. Torture is a very extreme and emotional situation. By putting Hermione in this position, the author can draw out strong emotions from the readers. It could also be related to character development. Hermione is often seen as a strong and intelligent character. Through torture, the author might want to show her vulnerability and how she overcomes it, while also showing Ron's role in that process.
It could be about Naruto disguising himself for various reasons, like to infiltrate an enemy base or to play a prank on his friends. Maybe he uses some new jutsu to change his appearance completely.
In some fanfictions where Draco kidnaps Hermione, his motivation could be related to family pride. The Malfoy family has long - held grudges against the 'Muggle - born' status that Hermione represents in the wizarding world. He might see kidnapping her as a way to assert the superiority of pure - blood wizards. Another possible motivation could be jealousy. Draco may be jealous of Hermione's intelligence and close relationships with Harry and Ron. By kidnapping her, he could try to break those bonds and prove himself more powerful.
For Hermione, her character would be fighting against this unjust situation. She would be using her wits to try and escape. Meanwhile, Draco and Zabini may start to have second thoughts as they see Hermione's strength and determination. Maybe Draco's motivation changes from self - interest to a more complex mix of respect and fear for Hermione.
Draco could be seeking redemption. He may be tired of being on the wrong side of the war. Saving Hermione, who is a symbol of the good side, would be a significant step in his journey towards redemption. Additionally, he might be influenced by his friendship or alliance with some of the other characters who are on the side of the Order of the Phoenix. They could have convinced him to do the right thing and save Hermione from Bellatrix.
One possible motivation could be that she's been tricked. Maybe a powerful Death Eater has cast a spell on her to make her believe their cause is just. Another could be that she's trying to protect her friends. She might think that by joining the Death Eaters, she can keep Harry and Ron out of danger.
Maybe Draco is jealous of Hermione's intelligence and abilities. In the fanfiction world, he could think that by making her his wife, he can somehow take credit for her achievements or keep her from outshining him. It could also be a power play. Draco might believe that having Hermione under his control through marriage would give him more influence in the wizarding world, especially if she has connections that he wants to use for his own gain.
One motivation could be that Draco has developed feelings for Hermione. So, when he sees Viktor as a rival for her attention or a threat to her safety, he takes action to save her.
Having Hermione as a boy in fanfiction could be quite a departure from the original. It could challenge traditional gender roles within the wizarding world and add a fresh layer of complexity to the storylines.