Perhaps Mal runs away because she discovers a dark secret about Auradon. It could be something that makes her question everything she thought she knew about this 'perfect' place. This discovery could be so shocking that she decides she needs to get away to process it all. Or maybe she has a premonition of some sort of danger coming to Auradon and she runs away to protect herself, not realizing that her absence could also be a danger in itself.
Mal might run away in the fanfiction because she's constantly being judged for her past as a villain's daughter. Despite her efforts to fit in Auradon, there are still those who look at her with suspicion. She could also be running away from a future that she doesn't want. For example, if there are plans for her to take on a role she's not ready for or doesn't believe in, she may choose to escape.
Well, if Mal runs away in 'descendants' fanfiction, she might be seeking freedom from the expectations placed on her. Maybe she's tired of being in the middle of all the drama and power struggles in Auradon. She could go to a hidden place, perhaps an enchanted forest where she can be alone and figure out who she really is without all the royal and villainous influences.
It could also be due to a particularly bad encounter with someone in the village. For instance, if he was bullied severely by some older kids and he felt that there was no one to protect him. He might have thought that running away was his only option to avoid further harm.
One possible reason is she's had an argument with her friends and feels she needs to get away to cool off.
Another possible reason is a sense of not belonging. Maybe she is different from the rest of her family in terms of beliefs or interests, and she runs away to find a place where she can be herself without judgment.
Maybe he's tired of his restricted life. In the story, he might be feeling suffocated by all the rules and expectations placed on him, so he decides to run away to find freedom.
One possible reason could be differences in their future plans. Mal, being from the Isle of the Lost, might have different ideas about how to rule Auradon compared to Ben. For example, she may want to focus more on integrating the VKs fully into Auradon right away, while Ben might be more cautious to avoid upsetting the traditional Auradonians too quickly.
If Mal's father is Hades in fanfiction, he would likely be powerful and somewhat intimidating. He has control over the Underworld, so he'd have powers like controlling fire and the dead. He might also be a bit of a trickster, as Hades is known for his devious ways in the Disney stories.
One possible reason could be that she feels trapped in the strict rules and hierarchy of the academy. Maybe she discovers some dark secrets within the academy walls that make her fear for her safety or the safety of those she loves. Another reason might be a conflict with a powerful figure at the academy, like a teacher or an elder vampire.
One possible reason could be Naruto's internal conflict. In yaoi fanfiction, the relationship is often complex. Naruto might be running away because he's confused about his feelings for Sasuke. He may not be ready to face the intensity of the relationship that the yaoi concept implies.
One possible reason could be to escape from false accusations. In the 'Harry Potter' universe, Sirius was wrongly accused of betraying the Potters. So in the fanfiction, he might run away to avoid being captured and to find a way to prove his innocence.