His flying style would likely be more elegant. With wings, he could glide more smoothly through the air compared to just using his ghost powers to fly. He might also be able to make more precise turns and maneuvers, like a bird or a bat.
Danny's flying with wings would probably be more energy - efficient. Instead of constantly expending ectoplasmic energy to stay aloft and move forward, the wings could help him conserve energy. He might use a combination of wing flaps and his ghostly propulsion, resulting in a unique, more sustainable flying style. He could also use the wind currents more effectively, soaring on thermals like real - world winged creatures do.
If Danny had wings, his flying style would be more showy. He could do acrobatic stunts in the air, like loop - the - loops and barrel rolls that are more characteristic of winged fliers. His flight would no longer be just about getting from point A to point B quickly, but also about showing off his new - found ability. The wings would add a whole new dimension to his aerial displays, making him look more like a majestic ghostly being rather than just a flying boy.
Sam would probably be the first to be curious and excited. She might start researching about any possible connection between ghosts and dragons right away. Tucker would be a bit more cautious at first, but also amazed. He might be worried about how Danny can control this new form and if it will put him in more danger. Jazz would initially be shocked but then would try to be very supportive. She might offer to help Danny figure out the psychological aspects of having this new form and how it affects his identity as a half - ghost.
One possibility is that his ghost powers evolved in a new way. Maybe after a particularly intense encounter with a powerful ghost or some strange ectoplasmic energy, his body underwent a transformation that resulted in the growth of wings. It could also be related to his family's ghostly heritage, perhaps an ancient trait that was dormant until now.
Danny would probably be heartbroken. He really cares about Sam, so finding out she cheated would be a huge blow. He might go into a state of denial at first, not wanting to believe it.
Sam would probably be really intrigued. She might see it as a cool new form for Danny and would be eager to learn more about how it affects his powers. Tucker, on the other hand, would likely be more concerned about how to reverse it at first. But once he realizes that Danny can still do some cool things as a mermaid, he'd be excited too.
Fanfiction.net is also a great place. There are numerous Danny Phantom fanfictions. Just use the search bar and type in 'Danny Phantom Wings'. You might have to sift through some results, but you're likely to find some interesting ones.
One common theme is Danny's newfound power or transformation related to the wings. It could be about him learning to control them and how it affects his superhero duties.
Sam would probably be very protective. She'd be the one making sure Danny was fed and clean. Tucker would be more into trying to figure out how to fix the situation using his tech skills. They'd both be really shocked at first, but then quickly adapt to taking care of Danny. They might have to come up with excuses for Danny's parents about why he wasn't around or why he was acting so strange.
The town would be in chaos. Danny has been protecting it from ghosts, so if he turned evil, he could start to let the ghosts run wild or even team up with them to cause destruction. Buildings would be damaged, and people would be living in fear.
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.'
The angel wings could give Naruto enhanced mobility. He could fly above his opponents, making it difficult for them to land attacks on him. This would also allow him to quickly close the distance between himself and an enemy or escape from a dangerous situation.