One possible plot could be that Naruto discovers he has black angel wings. Maybe it's a result of some ancient curse or a new form of chakra manifestation. He initially struggles to control them, fearing they make him different. As the story progresses, he learns to use the wings' power to his advantage in battles, perhaps even flying to reach enemies quickly or using the feathers as projectiles.
In a fanfiction with Naruto and black angel wings, the story could start with Naruto having a strange dream about the wings. When he wakes up, he actually has them. The wings seem to have a mind of their own at first. As he tries to understand their origin, he discovers that they are linked to an old prophecy in the ninja world. He has to then fulfill this prophecy, which involves using the wings to bring peace between different ninja clans.
Maybe they could be a result of some ancient curse or blessing. For example, Naruto might have accidentally stumbled upon an old shrine during one of his adventures and unknowingly activated a spell that gave him the black angel wings. It could also be related to his Uzumaki heritage, perhaps there's some hidden power within his bloodline that was awakened in an unexpected way, causing the appearance of these unique wings.
One possibility could be a curse or a blessing from a powerful being. Maybe Naruto encounters a god - like entity during one of his adventures who bestows the angel wings upon him as a way to test his character or give him new powers to face an upcoming threat.
One idea could be that Naruto discovers he has the power to manifest angel wings. This new power could make him an outcast at first, as it's so different from his normal ninja abilities. People might fear or envy him. But then he uses these wings to save the village in a unique way, like flying above to spot an approaching enemy army early.
Maybe they could be a result of some forbidden jutsu gone wrong. For example, Naruto might have been experimenting with a new form of chakra manipulation that accidentally summoned some dark energy which manifested as black wings.
There could be a magical creature that takes on a human - like form and has black angel wings. This creature could be a guardian of some sort, maybe of an important magical artifact. It might initially be seen as a threat but is actually there to protect the wizarding world. When Harry discovers this creature, they form an unlikely bond, and the black angel wings become a symbol of their unique relationship.
One possibility is that Naruto's angel wings would change the way others perceive him. His friends might be in awe at first, but then they would quickly accept this new aspect of him. The wings could also make his enemies more cautious. Naruto, being Naruto, would probably try to use the wings to spread hope and peace. He might fly to different villages and show that there can be something beautiful and positive that comes from different powers. This could lead to better relations between the villages as they see Naruto as a sort of angelic messenger.
He could have an adventure where he has to fly to a far - off mountain to retrieve a magical item. The angel wings would be his means of transportation. Along the way, he might encounter some flying beasts that he has to fight or outmaneuver.
It could be a result of a magical experiment gone wrong. Some rogue ninja or a mad scientist - type character in the Naruto universe might have been trying to create a super - being and accidentally gave Naruto red angel wings.
One idea could be that a new character with black angel wings arrives at Hogwarts. This character might be a mysterious figure, perhaps a guardian sent to protect Harry Potter from a new and unknown threat. Their black wings could symbolize a different kind of magic, not fully understood in the wizarding world. Another plot could involve Harry himself being magically bestowed with black angel wings, which gives him new powers and abilities but also makes him a target of those who fear the unknown in the magical community.
In the 'naruto is an angel fanfiction', it could be that Naruto's angel form is a result of some ancient curse or blessing. His friends might be initially shocked but then come to rely on his newfound angelic abilities. He could use his powers to purify the darkness that lurks in the hearts of some of the villains in the Naruto universe, like Orochimaru. He might also be able to create shields of light to protect his village from attacks.