Perhaps there's a prophecy in the fanfiction that Naruto is destined to become an 11 - tailed beast. As he starts to transform, he has visions of a future where he is either a great savior or a great destroyer. This internal struggle drives the plot. He tries to find a way to balance the power of the 11 tails without losing himself. Along the way, he meets new characters who have knowledge about the 11 - tailed beasts and they guide him on his journey.
One idea could be that Naruto discovers a new ancient power source that fuses with his existing chakra, gradually transforming him into an 11 - tailed beast. This new form could give him abilities beyond what we've seen in the original series, like the power to manipulate time on a small scale. Maybe he uses this new power to go back in time and prevent some of the tragedies that occurred in the Naruto world.
One possible plot twist could be that Naruto's new form as a tailed beast gives him the ability to communicate with all the tailed beasts simultaneously. This could lead to him uniting them in a way that no one has ever seen before, and they might work together to bring about a new era of peace in the ninja world.
In terms of his relationship with the other tailed beast hosts, it could become more complex. He might have a new understanding of what they've been through, but at the same time, they could be jealous of his new form. Some might see him as an upstart, while others might look to him for leadership. Naruto would have to navigate these tricky relationships carefully, all while trying to figure out his own new identity as a tailed beast.
A plot could revolve around a tailed beast that has been corrupted by an unknown force. Naruto and his friends then have to find a way to purify the beast without killing it. This would require them to understand the nature of the tailed beasts more deeply. In the process, they might discover new secrets about the tailed beasts' origins and their connection to the ninja world. It could also lead to new alliances and enemies. There could be intense battles and emotional moments as they try to save the corrupted tailed beast.
One unique idea is that Naruto can transfer his tailed beast transformation ability to his friends temporarily. This could be used in a team - up situation where they need an extra boost in battle.
Maybe in the fanfiction, Naruto as a tailed beast has the ability to transform into different elements related to his tailed beast nature. For instance, if he has a fire - related tailed beast form, he could turn into a blazing phoenix made of pure fire. This would give him new combat abilities and make his battles more epic. And his friends would have to learn how to fight alongside him in this new form. His training would also be different. Instead of normal ninja training, he would be learning how to control his tailed beast instincts and use his new powers for good.
One idea could be exploring the ten - tailed beast's origin in more depth. Maybe it has a hidden past or a connection to an ancient civilization that has been long forgotten in the Naruto universe.
One plot idea could be a young and inexperienced ninja discovers they have a unique connection to the tailed beasts that no one else has. For example, they can communicate with the beasts on a deeper level, not just the usual 'host' relationship. This could lead to them trying to unite the tailed beasts in a peaceful way, against all odds and the mistrust of the different ninja villages.
A possible plot could involve Naruto being able to enter the minds of the tailed beasts more freely and vividly. In this state, he experiences their memories as if they were his own. He witnesses the creation of the tailed beasts, the wars they were involved in, and the pain they've endured. This newfound understanding makes him determined to create a new world where the tailed beasts are not feared but respected. So he starts a movement among the ninja villages, using his influence and the power of his bond with the tailed beasts to change people's perceptions.
I think 'naruto ten tailed beast fanfiction' can be really interesting. It often explores the power and mystery of the ten - tailed beast in unique ways. Some fanfictions might focus on how the characters interact with this powerful being, like Naruto's potential new jutsus or his changed relationships due to the ten - tailed beast's influence.
You could write a tailed beast fanfiction where the tailed beasts are reincarnated as humans. They start to remember their past lives as tailed beasts slowly. This would lead to a lot of internal conflict as they try to figure out who they are now. They might also have to deal with the fact that they still have some of their tailed beast powers, which could attract unwanted attention from various groups in the world of the story.