In some fanfiction interpretations, the black wings could represent a burden or a responsibility. Naruto is a character who often takes on the weight of the world. These wings could be a physical manifestation of the new challenges and duties that come with his growing power. For example, he might now have to protect not just his village, but also something related to the Uzumaki clan that the wings are connected to.
Well, in some fanfictions, Naruto might obtain the black wings through a special chakra infusion. Maybe it's a result of some ancient Uzumaki clan power that was dormant within him and got awakened in a moment of extreme need, like when facing a powerful enemy.
The black wings could give him an extra means of mobility. He could use them to quickly change direction during combat, swoop down on opponents from above, or make quick getaways.
Well, it could symbolize great power. In many fictional concepts, wings often represent strength, freedom, or a connection to something divine. So Naruto having 12 wings might mean he has an extraordinary level of power, perhaps even a connection to a higher realm or a new form of chakra. It could also be a sign of his evolution as a character, making him stand out even more in the Naruto universe.
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.
Naruto is obviously a very popular character in these fanfictions, as the concept of him having black wings is central. Sasuke can also be a prominent character. He might be jealous of Naruto's new power, or he could be the one to help Naruto understand and control the black wings.
The author could be a relatively new writer in the fanfiction world who is trying to make a name for themselves with this creative concept. Maybe they were inspired by other Naruto fanfictions or by the original Naruto series itself. They might be someone who has a deep love for the Naruto universe and wanted to add their own unique twist to it by giving Naruto 12 wings.
There are fanfictions where the black wings on Naruto are related to some ancient jutsu or a curse. Maybe he got the black wings because he accidentally activated a forbidden scroll. In such stories, he has to find a way to either get rid of the wings or use them for good. It could involve a journey to find a sage or an old ninja who knows about this strange phenomenon.
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.
Sakura would probably be initially shocked. But then she'd quickly start asking a million questions about how he got them and if they're causing him any pain. She'd also be worried about how this new development might affect Naruto in battles. Sasuke, on the other hand, would likely be more reserved in his reaction. He might just raise an eyebrow and say something like 'Interesting, dobe.' But deep down, he'd be curious too. Shikamaru would probably just sigh and think 'What a drag, now there's more to worry about with Naruto.'