Erza might inherit Naruto's shadow clone jutsu. This would be extremely useful in battles as she could send out multiple clones to confuse her enemies while she attacks from a different angle. Another power could be Naruto's fast - paced movement skills. This would make her even more agile in combat, allowing her to dodge attacks more easily and close in on her opponents quickly.
One power Erza could get from Naruto is his ability to sense danger or the presence of others. In Naruto's world, he has a sixth sense of sorts when it comes to detecting threats. Erza could use this to her advantage in her own battles. Also, Naruto's willpower, which is often translated into a boost in his abilities, could be passed on to Erza. This would mean that in tough situations, she could dig deeper and find the strength to overcome her opponents.
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.
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.
He could inherit time - related powers. Maybe the ability to slow down or speed up time, which would be a huge advantage in battles. He might also be able to see into the past or future, which could help him in making strategic decisions.
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.
Since Yoruichi has strong spiritual energy in her world, Naruto might inherit some form of enhanced chakra that has spiritual aspects to it. This could give him new jutsu or abilities that are a blend of his original ninja skills and this new spiritual - chakra power. For example, he could use his new power to sense things in a different way, like Yoruichi can sense spiritual presences.
He could inherit the power of Force lightning. Darth Sidious was known for his powerful Force lightning attacks. In the Naruto universe, this could translate to some sort of unique chakra - based lightning attack that is far more powerful than the normal lightning - style jutsu. Also, Naruto might inherit some telekinetic abilities, being able to move objects with his mind or chakra, similar to how Sidious could use the Force for telekinesis.
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.