She could inherit his ability to resist the Imperius Curse. This would make her more resistant to mind - controlling magic in the DxD world. Also, his skill in Defense Against the Dark Arts could translate into better combat skills against devils or other threats in her world.
She might inherit enhanced physical abilities like superhuman strength, speed, and agility. Sesshomaru is a very powerful demon, so Fem Harry Potter could also have the ability to sense other magical beings from a distance. And perhaps she could inherit some of his demonic energy which could be used to enhance her spells or protect herself in a different way than normal wizarding magic.
She could inherit Naruto's chakra. This would give her an extra source of energy that she could use in combat. Maybe she could use it to enhance her physical strength like Naruto does when he taps into his chakra. Also, she might inherit his ability to perform the Rasengan. She could combine it with her sword - fighting skills for a really unique and powerful attack.
One possible power is the ability to use chakra. Since Naruto is known for his large chakra reserves, Blake could inherit a strong chakra pool. This would allow her to perform powerful jutsus, like maybe a modified version of the Shadow Clone Jutsu that suits her own combat style. Another power could be enhanced speed and strength, which Naruto also has, and Blake could use these in her battles more effectively.
One power Elena could inherit is Naruto's willpower. Naruto's unwavering will has been crucial in his many battles. Elena could have this same strong will, which would make her a formidable force against her enemies. In terms of more physical powers, she could potentially inherit the ability to use Rasengan. Although it might be in a different form in her world, it could still be a very powerful attack. Also, Naruto's ability to connect with others on a deep level could be passed down, allowing Elena to form stronger bonds with her friends and allies, which could be a power in its own right when it comes to facing challenges together.
He might inherit Naruto's shadow clone jutsu. This would be really useful for Markov. He could use the clones to gather information, fight multiple enemies at once, or even learn new skills faster by having the clones practice simultaneously. Also, Naruto's enhanced physical strength and speed, which come from his chakra, could be passed on to Markov, making him a formidable fighter in the fanfiction.
He could inherit some of the unique Uzumaki sealing techniques. Since Mito was an Uzumaki and was known for her sealing abilities, Naruto might be more proficient in that area. Maybe he could use seals in combat more effectively or create more powerful sealing jutsu.
Issei might inherit Naruto's chakra. This would give him the ability to perform ninja techniques like the Shadow Clone Jutsu. He could create multiple clones of himself to confuse enemies or help with tasks. Also, he could potentially inherit Naruto's ability to sense negative emotions, which would be useful in detecting threats.
Natsu could inherit the ability to use chakra. This would give him an extra edge in combat, allowing him to perform jutsus like Naruto. Maybe he could even learn the Rasengan, which he could combine with his fire magic for a super - powerful attack.
Since Tony is a master of technology, Harry could inherit the skill of creating and manipulating advanced tech. He could be able to design new types of power sources or communication devices. He might also inherit Tony's skill in robotics, being able to build and control intelligent machines. In addition to that, Harry could inherit Tony's leadership skills. This would help him lead teams in battles or in scientific research projects. And from Tony's combat experience, Harry could learn self - defense and strategic fighting techniques.
In this fanfiction, Harry could gain the power of enhanced perception. This would allow him to see things that normal humans or even wizards can't, such as the flow of spiritual energy. He might also gain the power to transform into a more powerful form, like a Shinigami's Bankai. His existing magical powers could potentially merge with his new Shinigami powers, creating something entirely unique. For instance, he could use his Patronus charm in a new way within the Shinigami world, perhaps as a form of spiritual protection.