One common theme is the struggle for acceptance. The demon brothers often face prejudice in the Naruto world because of their nature, so a lot of fanfictions focus on their journey to be accepted. Another theme is power and its control. They usually have great power, and the stories may revolve around how they learn to control it.
There's 'Naruto: Demon Brothers' Ascent'. In this fanfiction, the demon brothers are depicted with complex personalities. It delves into their journey of self - discovery and their struggle to find their place in the Naruto world. The author does a great job of incorporating elements from the original Naruto series while adding their own creative twists.
One common theme is friendship. Naruto often tries to befriend the demon brothers, showing that even beings from different worlds can form strong bonds. Another theme is power struggle. The demon brothers usually have some sort of power that Naruto has to either contend with or work with.
At first, they might be wary of each other due to their different upbringings and the power they both hold. But as they face common enemies, they start to trust one another more.
One idea could be that Naruto and Gaara discover they have a shared connection to an ancient demon power. They have to team up to control it and prevent it from being misused by evil forces.
The Kurama Brothers could be entities that have a similar origin to Kurama. They might have been part of the same chakra - based creation in the Naruto universe. They could possess some of Kurama's traits like great power and a connection to the natural energy in the world. They are often depicted as having their own personalities, with one being more hot - headed and the other more calm and calculating. Their relationship with Naruto usually involves them using their powers and knowledge to help Naruto grow as a ninja and a person. They might also have their own goals and motives that are intertwined with Naruto's journey.
One idea could be a story where Naruto and the Lee brothers team up for a special mission. They could face a powerful enemy that requires their combined skills. Naruto's jutsus and the Lee brothers' taijutsu would make for an exciting battle sequence.
In this fanfiction concept, Naruto and Sasuke as brothers could lead to a very different Naruto universe. With Sasuke having the Sharingan, he could potentially use it to protect Naruto more often. Maybe they would train together in new ways, combining Sasuke's Sharingan - related jutsu with Naruto's Uzumaki power. For example, Sasuke could use his Sharingan to analyze Naruto's chakra flow and help him master new forms of the Rasengan faster.
One idea could be that they discover they are brothers in a hidden past plot twist. Maybe their parents were from different villages but fell in love secretly. As brothers, they could team up to face a new and powerful enemy that neither could defeat alone.
In this fanfiction, their brotherhood might lead to a cultural exchange between Iwa and Konoha. Naruto could introduce Deidara to Ichiraku Ramen, and Deidara could show Naruto some unique Iwa traditions. As they do this, they also have to face some who oppose their new relationship, thinking it might be a threat to the balance of power between the villages. But they prove everyone wrong with their strong bond and how they use their combined skills to protect both villages.