In this fanfiction, there could be crossovers in the realm of magic and chakra. Since Naruto has chakra and Rias has devilish magic, they could find ways to merge or exchange these powers. For example, Naruto could use devil magic to enhance his shadow clones. In terms of culture, the ninja culture from Naruto's world and the devil society in Rias's world could clash and blend. Also, there could be crossovers in terms of training methods. Naruto's intense physical training and Rias's training in devil arts could be compared and combined.
A significant crossover could be in the concept of power - ups. Naruto's various forms like Sage Mode and Rias's different power levels as a devil could be related. They could help each other achieve even greater power. There could also be a crossover in terms of alliances. Naruto's village alliances could be compared to Rias's devil alliances. And in terms of relationships, Naruto's relationship with Hinata could be contrasted with Rias's relationships within her peerage, leading to some interesting interactions and exchanges of ideas between the two worlds.
One possible crossover could be in the area of combat techniques. Naruto's Rasengan could be combined with Rias's demonic powers in some way. Another could be in terms of leadership. Naruto, as a leader in his ninja village, and Rias, as a high - ranking devil, could share their leadership experiences. There might also be a crossover in terms of friendship. Naruto's friends like Sasuke and Sakura could interact with Rias's peerage members.
Well, perhaps the plot could center around Naruto's cousin being sent to Rias' world on a mission of sorts. Maybe there's a disturbance in the balance of power in Rias' realm that has an impact on Naruto's world too. The cousin, with his knowledge of Naruto's adventures, uses some of those learned tactics in the new world. He and Rias could form an unlikely alliance and as they get to know each other better, they start to share their respective cultures and powers, leading to a stronger bond between them and their teams.
Naruto's cousin might be initially cautious around Rias. But as he sees her leadership skills and determination, he would start to respect her. He could offer his ninja skills to help her in battles, like using his stealth to gather information. And Rias would be curious about his different power set and would try to learn more about his world.
Another possible reason is that Naruto might be protective of his own story's integrity. He has been through a lot in his own series, and the Rias fanfiction might seem like an intrusion or a misappropriation of the idea of fictional characters. It's like his world and story are his own, and the fanfiction is trying to merge it with something else in a way that he doesn't like. He may feel that his own story should be kept separate from this other fan - created content.
In some 'Naruto Rias sick' fanfiction, it could be that Rias is cursed by an enemy. Naruto, being the hero he is, feels responsible for helping her. He uses his knowledge of chakra and seals to try and break the curse. Meanwhile, Rias is weak from the curse and her devil powers are waning. As Naruto delves deeper into finding a solution, he uncovers secrets about both worlds that are related to the curse. This could lead to a series of adventures where they have to overcome various obstacles together, all while Rias is struggling with the effects of the sickness.
One good Naruto Kim Possible crossover in fanfiction could be where they team up to face a common enemy. For example, an evil ninja from Naruto's world teams up with a super - villain from Kim Possible's world. They would combine their unique skills, like Naruto's jutsus and Kim's acrobatic fighting style to defeat the bad guys.
A possible crossover could be the ninja techniques being incorporated into the Airwolf combat scenarios. For instance, Naruto's Shadow Clone Jutsu could be used to confuse the enemies while Airwolf is in a dogfight.
One possible plotline could be that Naruto is transported to the Highschool DxD world and immediately notices Rias's overbearing attitude. He decides to oppose her and starts to gather allies among the other students and characters who are also fed up with her ways. As a result, a power struggle ensues between Naruto and Rias.
Naruto may be forced to fight in battles or do tasks that he doesn't want to do. His skills and powers could be misused by Rias for her own purposes. Also, his relationships with his friends in his own world might be affected as he is enslaved in another world. He may not be able to return to his home or communicate with his friends, which could cause a lot of emotional distress for him.
Well, a cool crossover might involve the technology from Metal Gear in the Naruto world. Imagine if the Hidden Leaf Village got their hands on some of the advanced Metal Gear tech. They could use it to enhance their defenses or even their ninja tools. For example, kunai with built - in tracking devices like the ones in Metal Gear. Also, the characters' personalities could clash and then grow together. A brash Naruto might initially butt heads with the more stoic Metal Gear characters, but over time they learn from each other's strengths and weaknesses.
A possible crossover is a power - sharing one. Naruto could share his Rasengan technique with Zelda, who then modifies it using her magic to create a new and powerful attack. This would be a cool combination of ninja and magic powers.