One possible plot could be that an ancient and powerful tailed beast is released. Naruto and Hinata, in their quest to protect the village, end up being the only ones able to bond with it. They then have to learn to control the new power within them while facing opposition from other villages who fear their combined strength.
One possible plot twist could be that Naruto and Hinata have to quickly learn to control their newfound Jinchuuriki powers. Maybe they are suddenly thrust into a situation where an ancient evil is awakened and only their combined Jinchuuriki abilities can stop it. For example, they might discover that there is a hidden prophecy about two Jinchuuriki working together to save the world.
One possible plot twist could be that Naruto, as the Ten - Tails Jinchuuriki, has a hard time controlling the power at first. He might accidentally cause destruction in the Hidden Leaf Village. His friends would initially be afraid of him, but then they realize they need to help him master this power. For example, Sasuke could use his Sharingan to help Naruto understand the chakra flow better.
One possible plot could be that Naruto and Hinata are faced with a great threat to the ninja world that is beyond the power of normal shinobi. In their quest to protect everyone, they discover a hidden ancient power that transforms them into gods. As gods, they have to deal with new responsibilities and also face some jealousy from other powerful beings in the ninja world.
Perhaps the story shows Naruto exploring different aspects of the ninja world that are not related to jinchuuriki. He could be delving into ancient ninja techniques or solving mysteries that have nothing to do with the tailed beasts inside him. It might also highlight his relationships with other characters in a new light, like his rivalry with Sasuke in a non - jinchuuriki - related context.
A really interesting plot twist could be that they are turned into half - demons by an enemy who wants to use their new forms against the Hidden Leaf Village. However, instead of being used as weapons, Naruto and Hinata manage to use their half - demon powers in unique ways to not only defeat the enemy but also to bridge the gap between humans and demons in the ninja world. They could start a new era of peace and understanding between the two races.
In this fanfiction, the plot could revolve around Naruto and the Jinchuuriki family being hunted by a powerful organization. They are forced to go on the run and hide in different parts of the ninja world. During this time, Naruto discovers more about their shared heritage as Jinchuuriki. They also have to deal with the internal struggles of some Jinchuuriki who are not fully accepting of their role, and Naruto has to use his leadership skills to keep them together and safe.
Well, the story might revolve around the brother's different upbringings. Naruto grew up in Konoha, but his brother could have been raised elsewhere. This difference in environment could lead to different views on being a jinchuuriki. For example, Naruto might see it as a way to protect the village, while his brother could see it as a curse at first. As the story progresses, they could learn from each other's perspectives and grow stronger together.
One possible plot could be that Naruto and Hinata, as foxes, live in a hidden forest. They meet when Naruto is exploring a new part of the forest and accidentally stumbles upon Hinata's den. At first, Hinata is shy but Naruto's friendly nature draws her out. They then start to explore the forest together, facing challenges like avoiding hunters and finding food during a harsh winter.
The plot could involve Naruto being turned into a demon through some dark magic. Hinata, being in love with Naruto, refuses to give up on him. She decides to train hard to be able to protect Naruto from those who want to destroy him. Along the way, they discover a way to reverse the demon transformation, but Naruto has to make a choice between his newfound power and becoming normal again.
In this fanfiction, the pharaoh could be under a curse that is slowly draining the life out of his people. Naruto and Hinata arrive in this world by accident. They find out about the curse and decide to help. Naruto tries to use his chakra to break the curse, while Hinata uses her intelligence to figure out the origin of the curse. The pharaoh, seeing their efforts, starts to trust them and they all form an unlikely alliance. This could also lead to Naruto and Hinata having a new adventure together, strengthening their bond in the process.