If Shiki's Devil Fruit gives him the power of flight, Naruto could use his Rasengan in a new way. He could infuse it with his chakra and launch it at Shiki while he's in the air. On the other hand, Shiki could use his flight ability to dodge Naruto's attacks more easily. But Naruto's ability to quickly regenerate chakra would give him an edge in a long - drawn - out battle, as he could keep using powerful attacks even if some of them miss.
Well, let's say Shiki has a Devil Fruit that gives him enhanced strength. Naruto, with his Sage Mode, has increased physical abilities as well. In a face - off, Naruto's speed and agility from Sage Mode could help him avoid Shiki's powerful blows. At the same time, Naruto's ability to sense danger through his Sage Mode might give him an advantage in predicting Shiki's attacks. And if Shiki uses his Devil Fruit power to transform into a more powerful form, Naruto could call upon the Nine - Tails' chakra to also boost his own strength and match Shiki's new level of power.
Naruto's chakra could potentially disrupt the Devil Fruit powers. Since Naruto has a large amount of chakra, it might be able to interfere with the energy that the Devil Fruit gives Shiki. For example, if Shiki has a Devil Fruit that gives him the ability to create illusions, Naruto's strong chakra presence could break through those illusions.
One interesting combination could be Naruto's Rasengan with the power of the Pika Pika no Mi (Glint - Glint Fruit). He could create a Rasengan that emits intense light, blinding his opponents as he attacks. Another could be using his Shadow Clone Jutsu with the Mera Mera no Mi (Flame - Flame Fruit). His clones could all be on fire, creating a very intimidating and powerful offensive.
Naruto's chakra could potentially enhance the werewolf abilities. For example, his strong life force chakra might make the werewolf's healing factor even more powerful. Also, his ability to use shadow clones could be used in a new way. He could send out werewolf - like clones during a full moon.
Darkrai's power of inducing nightmares could be countered by Naruto's positive energy. Naruto's ability to inspire and his strong will could disrupt Darkrai's dark influence. For example, if Darkrai tries to put Naruto in a nightmare, Naruto's memories of his friends and his determination to protect them could break through the nightmare.
Naruto's godlike powers, such as his ability to create multiple clones or his Rasengan, could be used in combination with Medusa's stone - turning gaze. For example, Naruto could send clones towards an enemy while Medusa uses her gaze to turn some of the approaching foes to stone. This would create a distraction and allow Naruto to land a powerful Rasengan on the remaining enemies.
Naruto's ability to communicate with animals through his chakra might play a role. He could attempt to communicate with Godzilla on a deeper level. His transformation abilities, like the Sage Mode, could give him extra strength and durability, which would be useful when dealing with the powerful forces associated with Godzilla. His summoning jutsu could also bring in other ninja animals to help in battles alongside Godzilla.
Sadao Maou's ability to manipulate magic could potentially be used to enhance Naruto's ninjutsu. Maou might be able to add an extra layer of power or a different effect to Naruto's jutsus. On the other hand, Naruto's shadow clone jutsu could be a very useful tactic in the battles in The Devil is a Part - Timer world, where numbers and strategic use of clones could give an edge.
Often, Naruto Shiki's powers develop through intense training. He might face difficult challenges that force him to dig deep and discover new aspects of his abilities. For instance, in a fight against a powerful enemy, he realizes he can merge his shadow powers with his existing ninja techniques to create a more powerful attack.
Naruto might be initially in awe of Tiamat's powers. Given his curious nature, he would likely try to understand how they work. He could attempt to adapt some of her power - using techniques into his own ninja fighting style.
Well, Naruto's powers are mainly centered around his chakra control and the unique jutsus he has learned. In High School DxD, the powers are often related to sacred gears or devil abilities. If Naruto were to enter this world, his chakra might be seen as a new type of energy source. His ability to summon toads could be a huge advantage in certain situations. For instance, if he were in a fight against a powerful devil, he could summon Gamabunta, who could cause chaos and distraction. On the other hand, the devils' powers of illusion and teleportation could pose new challenges to Naruto, forcing him to adapt his combat style. His Rasenshuriken, which is a highly destructive jutsu, might be able to break through some of the stronger defenses in the DxD world.
Naruto's chakra - based powers and Hellboy's demonic powers could create some interesting interactions. For example, Naruto's Rasengan, which is a concentrated ball of chakra, might have a different effect when used against the demons in Hellboy's world. It could either be more or less effective depending on the nature of those demons.