It's a really strange idea. McGonagall is more of a strict teacher figure in the Harry Potter series. This concept goes against the traditional perception of her character. It seems more like an attempt to shock or create something extremely out of the ordinary rather than a natural extension of the story.
I'm not sure if there is a specific fanfic with that exact plot. Fanfiction can cover a wide range of ideas, but this one seems quite unusual. Most fanfics tend to focus on more traditional themes like Harry's adventures at Hogwarts, his relationships with his friends, or the fight against Voldemort. However, in the huge realm of fan - created content, it's possible that something like this exists, but it's not likely to be very popular.
Definitely not. The Naruto story has a well - defined family structure and character relationships. This fanfic concept goes against all of that. It's not only inappropriate but also disrespectful to the original story and its fans who expect the fanfics to be at least somewhat in line with the original world - building.
The idea behind it could be that the person sees certain elements in the Harry Potter series that they think resemble common tropes in fan - created fiction. But this ignores the fact that J.K. Rowling was the originator of the story and its unique world - building. For example, the magic system, the characters like Harry, Hermione and Ron were all her creations, not something from fanfic.
She might use her magic skills to shield Harry from physical harm. For example, she could cast protective spells like a strong shield charm when Harry is in danger from dark wizards. Also, she may use her authority in Hogwarts to keep him away from those who wish to harm him, like making sure he is not alone in dangerous areas of the school.
It's possible, but not common. Fanfic writers often explore unique and sometimes even controversial ideas. For a fanfic with this concept to be suitable for all, it would have to be carefully crafted. Maybe it could be set in an alternate universe where the rules of magic and relationships are different. The writer would need to handle the topic delicately to make it acceptable, perhaps by using it as a device to show an extreme level of care or protection from Snape towards Harry.
One major challenge is the obvious inappropriateness of the concept in the context of the original 'Harry Potter' series. The characters have a very specific set of relationships and behaviors, and this idea goes far beyond what is considered normal for them. Another challenge is making it believable. Even in a fanfic world, it's hard to justify such a scenario without completely changing the nature of the characters.
It's wrong because of the age difference and the teacher - student relationship. In the story, McGonagall is an authority figure to Harry, and such a relationship would be a violation of professional boundaries.
McGonagall as a guardian might also involve her protecting Harry from the darker forces in the wizarding world more directly. Instead of just being a teacher, she could be the one to shield him from certain Death Eaters or threats. She could use her Animagus form to secretly follow Harry when he's out of Hogwarts and make sure he's safe.
There's also 'Snape and McGonagall: A Different Perspective'. This fanfic delves into a more complex relationship between them. It starts with a simple encounter and then builds on their shared experiences at Hogwarts, including their different views on teaching and protecting the students. It's a really engaging read.
One possible reason could be that she is under some sort of dark magic influence. Maybe a spell has been cast on her that makes her act out of character and abandon Harry.