One good Powergirl comic story is the one where she teams up with Superman to fight a powerful alien threat. Their combined strength and different approaches to heroism make for an exciting read.
There are a few out there. One aspect that makes 'Naruto and Powergirl' fanfiction interesting is the cultural differences. Naruto comes from a world with a feudal - like ninja society, while Powergirl is from a more modern, superhero - filled world. Some fanfictions might play on these differences, like Naruto being confused by modern technology in Powergirl's world, or Powergirl being intrigued by the ninja code of honor. It's these unique combinations that make exploring such fanfictions worthwhile.
Well, a frequent theme is the idea of teamwork. Given their different skill sets, fanfictions often have them teaming up to face a powerful foe. For instance, they might combine Naruto's strategic thinking in combat (learned from his ninja training) with Powergirl's brute force. Also, the theme of mutual respect can be seen, as they learn to appreciate each other's abilities and backgrounds over the course of the story.
The contrast between their characters. Batman is the brooding, dark detective of Gotham, while Powergirl is a powerful and confident Kryptonian. Their interactions can create interesting dynamics in fanfiction.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of Batman and Powergirl fanfictions. Many writers share their creative stories there, and you can search using relevant tags to narrow down your options.
Naruto's chakra-based powers and Powergirl's superhuman abilities could combine in interesting ways. For example, Naruto could use his chakra to enhance Powergirl's strength even further. He could also use his shadow clone jutsu to create distractions while Powergirl attacks with her super strength or heat vision.
A fanfiction could be about a prophecy that involves both Naruto and Powergirl. In order to save both their universes, they must find a way to combine their powers. This leads to a journey where they face many challenges, both internal and external. Naruto has to deal with his own insecurities about being in a new and strange place, and Powergirl has to learn to trust Naruto completely.
Another plot could be that Voldemort discovers Powergirl's existence and sees her as a threat. He tries to manipulate the wizarding world against her. But Harry and his friends believe in her and together they work to expose Voldemort's lies and also learn from Powergirl about different ways of fighting evil. Powergirl could introduce new concepts of justice and heroism to the wizarding world.
The Weasley family would have different responses. Mrs. Weasley would be motherly and concerned about this strange new person. Fred and George would see her as a source of new ideas for their pranks and inventions. Ginny would look up to her as a strong female figure, much like she does with Hermione. And all of them together would gradually get used to having Powergirl around, and they would all grow from the experience of interacting with someone from a completely different world.
One idea could be that Powergirl somehow gets transported into the Harry Potter universe. She could use her super strength and flight abilities to help the students at Hogwarts during a time of great danger, like when Voldemort is on the rise. Maybe she teams up with Harry, Hermione, and Ron to fight the Death Eaters in a unique way that combines magic and her superpowers.