A simple idea for the fanfiction could be that the brother, due to his weak body, is always in the shadow of Rias. His 'brocon' nature makes him extremely possessive of her. Naruto, being the outsider, initially doesn't understand this dynamic. But as he gets to know them, he tries to make the brother see that he can have his own identity and purpose, even with his physical limitations. He could encourage the brother to find his own strengths, like intelligence or strategy, rather than just relying on his relationship with Rias.
In this fanfiction, the brother's 'brocon' nature towards Rias could be a complex aspect. He might be overprotective because of his weak body, feeling that he has to be the one to look after his strong sister in some way. Naruto could come into the picture and show him that strength isn't just about physical power. For example, Naruto's willpower and determination are things the brother could learn from. He could start seeing that his sister values strength in different forms too, and this realization could help him grow out of his overly 'brocon' behavior and focus on his own self - improvement.
In a fanfiction where Naruto is Rias' brother, the Naruto storyline would be altered significantly. Naruto's nature as a person might change due to the influence of the devil society. He may become more sly or strategic in the way devils are. His fighting style could incorporate more magic - like elements from the DxD world. His backstory would now involve being part of a devil family. His relationships with his friends in the Naruto world would be less prominent as he'd be more involved with the devils. For example, instead of going on missions in the ninja world, he'd be involved in devil - related tasks to protect his sister and their family's status.
Well, considering the devilish nature of Rias' world, Naruto could gain the power of flight, which is not something he has in his original ninja world. He could also gain the power to resist holy attacks, as devils are often weak against holy elements. Another power could be the ability to create and control demonic flames. These new powers would not only change his combat capabilities but also how he is perceived in this new fanfiction world.
One idea could be that Naruto, with his strong sense of justice and loyalty, helps Rias in the supernatural politics of her world. He might use his ninja skills to protect her and her peerage from other devils or threats. For example, when facing a powerful rival devil clan, Naruto's shadow clone jutsu could create a diversion while Rias plans a strategic attack.
One possible plotline could be that Rias' brother has a brocon (brother complex) and is overly protective of her. In the Naruto world, perhaps they get involved in a mission together where Naruto also has to work with them. Rias' brother might constantly be trying to keep Naruto at a distance from his sister because he's so possessive. This could lead to some comical misunderstandings as Naruto is just being friendly.
At first, Rias' brother would see Naruto as a threat to his relationship with his sister. But as time goes on, if Naruto shows that he has no romantic intentions towards Rias and is just a friend, the brother might start to warm up to him. Rias would appreciate Naruto for being able to handle her brother's brocon behavior better than others. And Naruto would just be his usual friendly self, gradually becoming part of their little group.
Yes, there might be. Fanfiction is a vast world where all kinds of crossovers and unique relationships are explored. You can start by looking on popular fanfiction websites like Fanfiction.net or Archive of Our Own. Just search for the relevant tags or keywords to find stories that revolve around this concept.
Yes, there might be some fanfiction exploring such a unique crossover concept. In the world of fanfiction, writers often come up with creative and unexpected relationships between characters from different series. They might do this to create new storylines, explore different character dynamics, and engage readers who are fans of both 'Naruto' and the series where Rias is from (presumably 'High School DxD').
I'm not entirely sure if there is such a specific fanfiction. There are thousands of fanfictions out there, and while the concept seems interesting, it could be a relatively niche idea. You might have to search through various fanfiction websites dedicated to both Naruto and the series Rias is from. Maybe start with popular ones like FanFiction.net or Archive of Our Own and use relevant search terms to see if you can find it.
A simple idea for a fanfiction could be a tournament - style story where Naruto, Rias, and Akeno all participate. Each would bring their own unique skills to the table. Naruto has his ninja abilities, Rias her devil powers, and Akeno her electrical attacks. It would be interesting to see how they compete against each other and then eventually team up against a common foe.