I'm not entirely sure as I haven't read this specific fanfiction. But it might be a story that combines elements of the 'Naruto' universe with the idea of Naruto being the'son of Gondor' which could involve some sort of crossover between the Naruto world and the lore of Gondor from Middle - earth. Maybe it has Naruto possessing some of the traits or powers associated with Gondor.
I'm not sure which specific story Gandalf is telling as there are many in the Tolkien's works. Maybe it's about the history of Middle - earth, like the battles against the dark forces or the tales of the rings.
It's hard to say. Gandalf has a lot of raw power and experience. He's faced some really tough foes in Middle - earth. But Harry Potter is no slouch either. He's got his own set of powerful spells and the ability to think on his feet. However, I think Gandalf might have the edge. His magic is more of an all - encompassing force, and he's had centuries to master it.
Another concept is that Naruto is sent to Middle - earth. There, he could use his ninja skills and chakra powers. He and Gandalf could team up to fight Sauron. Naruto's ability to make friends and inspire others would be really useful in uniting the different races of Middle - earth against the common enemy.
Well, Gandalf is from the Ainur. He was among those Maiar who were sent to Middle - earth. His purpose was mainly to help the good against the forces of evil like Sauron. He was created long before the events in Middle - earth started to unfold. Gandalf's origin story is deeply intertwined with the greater cosmology of Tolkien's world. He had powers that were both magical and related to his wisdom and knowledge, which he used to influence the course of events in Middle - earth.
Gandalf originated from a higher spiritual plane. He was dispatched to Middle-earth with a purpose. His background involves being part of a divine order and having a responsibility to bring hope and resistance against evil.
You could try searching on popular fanfiction websites like FanFiction.net or Archive of Our Own (AO3). Just type in 'naruto son of gondor' in their search bars and see if any relevant stories pop up.
He'd probably rule with a sense of fairness. Harry has always been one to fight for what's right at Hogwarts, so in Gondor, he'd ensure justice for all. He might set up new laws that protect the weak and punish the wrongdoers severely.