Naruto could use his chakra control to enhance his Kryptonian super speed. For instance, he could focus chakra on his legs while using his Kryptonian speed to move even faster and more stealthily. Also, his shadow clone jutsu could be combined with his Kryptonian powers. He could send clones with super strength or heat vision to attack enemies from different directions.
Well, it could be really interesting. Naruto, with his ninja skills, suddenly having Kryptonian powers like super strength and flight would change the Naruto universe completely. He might be able to defeat his enemies even more easily or use his new powers in unique ways in battles against the Akatsuki. For example, instead of just using Rasengan, he could punch with Kryptonian strength while using chakra to enhance the impact further.
In a 'Naruto is Kryptonian' fanfiction, there are numerous possibilities. Naruto could have all the typical Kryptonian powers such as super strength, invulnerability, and super speed. This would completely change the power dynamics in the Naruto universe. For example, in battles, he wouldn't need to rely on shadow clones as much. His heat vision could be a substitute for some long - range attacks. Also, his origin story would be different. Instead of being an orphan because of the Nine - Tails attack, he could be an orphan because of Krypton's destruction. His relationships with other characters would also shift. His friends might be in awe of his new powers, and some might be jealous or even afraid. And the villains in the Naruto world would have to face a much more powerful opponent. There could be a whole new set of storylines revolving around Naruto's discovery of his Kryptonian heritage and how he uses it to shape the ninja world.
A common theme is power enhancement. Since Kryptonians have superpowers, when combined with Naruto's abilities, it creates a new level of power. Another theme could be cultural clash, as the Kryptonian and Naruto cultures are very different.
One popular kryptonian naruto fanfiction might be where Naruto somehow gets Kryptonian powers. For example, in some stories, he could be exposed to Kryptonian technology or meet a Kryptonian who imparts some of their abilities to him. This could lead to really interesting scenarios like Naruto being able to fly, having super strength, and still using his ninja skills in combination.
A smart Kryptonian in a Naruto fanfiction might start a school of their own. They could teach both Kryptonian knowledge and ninja skills. This would attract students from all over the Naruto world who are eager to learn something new. They could also use their intelligence to research and discover new forms of chakra or hidden ninja powers.
Yes, there might be such fanfiction out there. You can start by looking on popular fanfiction websites like FanFiction.net or Archive of Our Own (AO3). Just search for 'Naruto is Kryptonian' on their search bars, and you may find relevant stories.
First, do your research on Kryptonian lore. Know their powers, culture, and history. Then, create an original character with unique traits within that framework. For example, your OC could have a different take on their Kryptonian powers. Next, think about how this character will interact with the Supergirl universe. Maybe they become an ally or a rival.
One of the common themes is adaptation. A kryptonian in a new fictional world, say like the Star Trek universe, has to adapt to new technologies, cultures, and rules. They can't just rely on their Kryptonian powers all the time. Also, friendship and alliances are often themes. In a crossover with the Harry Potter world, a kryptonian might form alliances with the Hogwarts students to fight a common enemy. And of course, discovery is a theme too. Discovering new things about the crossed - over world and also about themselves as a kryptonian in a different context.
One great 'Supergirl OC Kryptonian' fanfiction is 'The Kryptonian's New Path'. It follows an original character who has unique Kryptonian abilities and their journey in the world of Supergirl. The story does a great job of exploring how this new character interacts with the existing Supergirl universe.