It could be an evil dark wizard. This wizard might have created the mask with the intention of using it for some nefarious purposes, like taking over the wizarding world. But before he could use it, the mask was lost or hidden, and now Harry has found it.
Maybe it was created by an ancient and powerful group of wizards. They made the mask as a protection device for the wizarding world. However, over time, its purpose was forgotten, and it became just an odd relic until Harry stumbles upon it. The group could have been a secret society that no longer exists in the present - day wizarding world.
Well, in such a fanfiction, Harry Potter might discover a magical mask with special powers. It could be a mask that allows him to see through disguises, like those used by Death Eaters. Maybe it was left behind by an ancient wizard and holds the key to some long - forgotten mystery in the wizarding world.
The mask could potentially strain Harry's relationships. His friends might be worried about him using the mask and getting corrupted. For instance, Hermione could be very cautious and try to persuade Harry to get rid of the mask. This might cause some friction between them as Harry might be more curious about the mask's power.
Well, if Harry Potter finds the Mask of Zen - Aku, it could lead to a lot of chaos. Maybe the magic of the mask would interact in strange ways with Harry's own magic. He might struggle to control the power of the mask and find himself in situations where he has to make difficult choices between using the mask's power for good or being corrupted by it.
It might be related to a secret society or a dark magic object. In the Harry Potter universe, there are often mysterious items with special powers. The hollow mask could be one such item, perhaps used for disguises or to access hidden places.
It could be a new character created specifically for this fanfiction. Maybe a powerful wizard who has been in hiding and uses the mask to conceal his true appearance while he moves around Hogwarts or the wizarding world.
There are countless Naruto fanfic writers, and without further details, it's near impossible to determine who wrote the 'naruto finds the mask fanfic'. However, if you start your search on platforms like Wattpad, in addition to Fanfiction.net and Archive of Our Own, you might get lucky. You could also try reaching out to Naruto fanfic communities on social media platforms. They might be able to point you in the right direction. Maybe someone in the community has read this particular fanfic and knows the author. It could be a relatively new writer trying to make a name for themselves in the Naruto fanfic world, or it could be an established author with a large following.
Well, perhaps in this fanfiction, when Harry Potter wears Tobi's mask, he gains some of Tobi's mysterious powers. He could use these powers to secretly spy on the Death Eaters, getting valuable information to help the Order of the Phoenix. Maybe the mask also gives him a new look that confuses his enemies, and he uses this to his advantage in battles.
Well, it could be a story where Harry Potter himself is transported to the world of Majora's Mask. He might see the Skull Kid and try to reason with him using his knowledge of magic and friendship. The Hogwarts students could be seen as strange beings in Termina, and they would have to adapt quickly. The wands could be used in new and unexpected ways, like using spells to control the movements of the moon in Majora's Mask.
Well, if Harry Potter were to wear Revan's mask, it could potentially give him some new powers or a different appearance. Maybe the mask has some sort of magic that is not from the wizarding world he knows. It could also make him look really cool and intimidating to his enemies.
It could be Sasuke. He might be wearing a mask for some mysterious reason, like hiding his new powers or a new allegiance. Maybe he's on a secret mission that even Naruto doesn't know about at first.