Another aspect of world - building change is the cultural exchange. 'Naruto' has a strong sense of ninja culture, with things like the ninja headbands and the code of the ninja. In 'High School DxD' fanfictions influenced by 'Naruto', this culture could start to seep in. Maybe the devils start to adopt some of the ninja values, or there could be new social norms based on a combination of both cultures.
A fanfiction could focus on Naruto's training regime influencing the characters in High School DxD. His intense physical and mental training could inspire the students at the school. They might start incorporating some of his training methods, like running up trees or on water, to improve their own strength. And Naruto could also learn from their magic-based training and combine it with his chakra control for new and powerful techniques.
Well, if Naruto Juubi was in High School DxD fanfiction, the storyline would change drastically. For one, the power dynamics would be completely different. Naruto Juubi is extremely powerful, and in the High School DxD world which already has a complex power system, it would disrupt the existing balance. The characters in High School DxD would have to adapt to this new, overpowering force. Maybe some would try to ally with it, while others would see it as a threat. Also, the cultural and personality differences between the Naruto universe and High School DxD would create interesting interactions. Naruto Juubi's values from the Naruto world might clash or blend with the more modern and somewhat hedonistic values of the High School DxD characters.
Well, if Naruto's Hiraishin was introduced into the High School DxD universe, it would likely create a huge shift. Characters in DxD would be astounded by the sudden appearance of this teleportation jutsu. It could change battle dynamics completely. For example, in a fight against a powerful devil, Naruto could use Hiraishin to quickly close the gap and land a surprise attack. It might also lead to new alliances as characters try to understand and utilize this new power.
His chakra abilities might be affected by the magic in the DxD world. Maybe his Rasengan could gain some magical properties.
In this fanfiction, Naruto could be on a mission to find a way back to his own world. Along the way, he teams up with Issei and his group. Together, they face various challenges, including battles against powerful devils. Naruto's sage mode could be a crucial factor in these battles, and he might also learn some new skills from the DxD world.
Naruto has a very outgoing and friendly personality. In the High School DxD world, he would probably try to make friends with everyone, regardless of their race or faction. This could lead to some very interesting interactions. For example, he might try to convince the devils to use their powers for more positive things, like protecting the innocent, rather than just for their own gain. And his skills in stealth and combat would make him a valuable asset in the battles that often take place in the High School DxD world.
Well, Naruto's friendly and outgoing nature would make him quickly form friendships in High School DxD. He could also use his ninja skills to outwit the devils and other supernatural beings in various challenges and competitions within the school. His ability to never give up would inspire the characters in this new world.
Naruto could also be a catalyst for change in the High School DxD world. His values of friendship and never giving up could inspire the characters there. He might introduce new ways of training or fighting. His ability to endure pain and keep going would be something that the characters in High School DxD, who are often more focused on power and status, could learn from. He could also bring a different perspective on the relationships between different species in that world, given his own experiences with different ninja clans and villages.
Naruto Otsutsuki could fit into the High School DxD universe by being a new and powerful entity. His abilities would be a significant addition. For instance, his transformation abilities like the Nine - Tailed Fox form could make him a force to be reckoned with among the devils, angels, and fallen angels in the DxD world.
The abuse of Naruto in a High School DxD fanfiction would likely add a lot of depth and darkness to the story. It could be used as a plot device to show his growth and resilience. He might start off as a victim but gradually rise above the abuse, using his own unique skills from the Naruto universe combined with whatever new powers or situations he encounters in the High School DxD world. This would make for a very interesting character arc.