In fanfiction, the origin of Naruto having 2 tailed beasts could be due to a powerful ninja's experiment. This ninja could have been trying to create a super - powerful warrior and decided to combine the power of two tailed beasts into one person, which happened to be Naruto. Or it could be a gift from some sort of god - like being in the Naruto universe. This being might have seen Naruto's potential and decided to bestow an extra tailed beast on him to help him in his future battles and challenges.
Well, it might be due to a glitch in the system that binds tailed beasts to people. There could have been an error during the normal process of a tailed beast being sealed, and instead of one, two got sealed into Naruto. Another origin could be that Naruto was in the wrong place at the wrong time. Maybe there was a battle between tailed beasts and their hosts, and in the chaos, Naruto ended up being the recipient of two tailed beasts. It could also be part of a grand design by an unknown force that has plans for Naruto and the ninja world, and having two tailed beasts is just the first step in that plan.
In this fanfiction, Naruto might have some deep conversations with the tailed beasts. He could learn more about their pasts and the secrets they hold. Maybe they'll team up against a new common enemy.
One interesting storyline could be about the tailed beasts forming an alliance outside of the control of humans. They might work together to protect their own kind and the world in a different way than the shinobi. For example, they could create their own hidden land where all chakra - based creatures are welcome.
Sakura could be a great help. Her medical skills could come in handy if Naruto gets injured during his battles or difficult encounters while trying to free the tailed beasts. Also, her combat skills have improved over time, so she could fight alongside Naruto.
One origin could be a genetic mutation within the Uzumaki clan that has been dormant for generations. Naruto, being an Uzumaki, could be the first in a long time to have this mutation manifest as claws. Or it could be due to a curse placed on him by an enemy. However, instead of weakening him, the curse gives him the claws which he then learns to use to his advantage. It could also be a gift from a powerful sage or spirit that he encounters during one of his adventures, seeing the potential in Naruto and bestowing him with the ability to have claws for a specific purpose like protecting the village or fighting a greater evil.
Perhaps it was a gift or a curse from some powerful being. For example, a god or a demon could have bestowed this third eye upon Naruto for some purpose, either to help him in his journey or to make his life more difficult with new powers that come with their own challenges.
In many fanfictions, the tailed beasts' personalities are shaped by their experiences. The Five - Tailed Horse is usually depicted as noble and proud. It has a certain elegance in the way it behaves. The Six - Tailed Slug is more nurturing and gentle, perhaps because of its slug - like nature. The Seven - Tailed Horned Beetle is often seen as mysterious and a bit aloof. It keeps to itself and doesn't easily open up. When it comes to the relationship with Naruto, these personalities play a big role. For example, Naruto might have an easier time getting along with the more friendly - natured tailed beasts at first, while having to work harder to understand and befriend the more reserved ones.
In this fanfiction, Naruto could control all the tailed beasts because of his unique chakra nature. His chakra is very special and has a high compatibility with the tailed beasts' chakra. Also, his experiences with Kurama might have given him insights on how to handle other tailed beasts. He probably communicates with them on a spiritual level and convinces them to work together with him.
Well, in many fanfictions, Naruto might use his strong will and the power of his Uzumaki heritage. His natural chakra reserves are huge, which helps. He also has a deep understanding of friendship and the tailed beasts' pain from his own experiences. So, he can connect with them on an emotional level and gradually gain their trust, thus being able to control them.
The abilities would be numerous. Naruto could gain the power of enhanced perception from one of the tailed beasts, being able to sense enemies from much greater distances. Another tailed beast might give him the ability to manipulate earth, allowing him to create earthquakes or form defensive earth structures. And with the combined power of three tailed beasts, he could potentially break through any type of chakra - based defense. His stamina would also be greatly increased, enabling him to fight for longer periods without getting tired.
Another way is through shared experiences. If they face a common enemy together, like an evil organization that wants to capture all tailed beasts, they would have to rely on each other. This would lead to deeper understanding and stronger relationships as they fight side by side and protect one another in the face of danger.