Well, it could be that Naruto's strong will and his connection to all the other tailed beasts play a role. Since he has befriended the other tailed beasts, their combined energy or some sort of spiritual link might attract the power of the Juubi. For example, in some fanfic concepts, the tailed beasts' collective consciousness decides to merge their powers with Naruto, which includes the Juubi's power as the ultimate form of chakra.
Well, Naruto could also gain some sort of enhanced perception. The Juubi has a connection to all things in the Naruto universe in a way. So, by holding it, Naruto might be able to sense things from much farther away, like threats or allies in need. This would give him a huge advantage in battles and also in his role as a protector of the village. He could react faster to any incoming danger.
In a Juubi Naruto Chunin Exams fanfiction, Naruto might struggle with the balance between using the Juubi's power to his advantage and not losing himself. The Chunin Exams are a high - pressure situation already, and with the added factor of the Juubi, it could lead to some intense battles. For example, he could accidentally release too much of the Juubi's power during a fight, endangering his opponents and himself, and then have to figure out how to rein it in.
The idea of Naruto sealing the Juubi is quite common in Naruto fanfictions. If Kurotsuchi is involved, it could be that the author wants to explore a different kind of relationship. For example, Kurotsuchi could be from a different village and her interaction with Naruto during this momentous event could lead to a new alliance or at least a better understanding between their respective villages. Also, the sealing of the Juubi by Naruto is no easy feat. It would require a great deal of chakra control and knowledge of sealing jutsus. Kurotsuchi, with her own skills in earth - based techniques, might be able to contribute in unexpected ways, like creating a stable environment for the sealing to take place.
In a Juubi Naruto Attack on Titan fanfiction, Naruto could form an alliance with Eren. Naruto's ability to sense danger and his superhuman strength would be a great asset. He could teach Eren some of his ninja techniques, like how to better control his Titan form. Maybe Naruto could even find a way to use his Sage Mode to understand the Titans better.
Yes, there might be. There are numerous fanfiction stories out there in the Naruto fandom, and with such an interesting concept as 'naruto is juubi x fem bijuu', it's quite possible that someone has written a story about it. You can check on popular fanfiction websites like FanFiction.net or Archive of Our Own (AO3).
Well, he would probably become extremely powerful. His already impressive chakra reserves would be multiplied many times over with the Juubi's power. He might gain new and unique jutsu that are a combination of his own and the Juubi's abilities.
He could become extremely powerful. He might be able to defeat any enemy with ease, even those who were previously considered unbeatable. His physical abilities would be enhanced, like his speed, strength, and endurance.
Well, in such fanfictions, Naruto's connection to his 'parents' (Kyuubi and Juubi in this case) gives him unique abilities. For example, he could have a special form that combines the features of both the Kyuubi and the Juubi. This form might not only look cool but also have abilities like the ability to control all forms of chakra more efficiently. Also, his status as their son could lead to a different relationship with the other characters in the Naruto universe. Some might fear him due to his immense power, while others might see him as a savior figure.
It is fairly popular. The concept of Naruto being the son of Juubi and Kaguya has drawn the attention of many Naruto fans who enjoy fanfiction. This idea shakes up the traditional Naruto lore and gives fanfiction writers a great opportunity to be creative. They can explore how Naruto's relationships with other characters might change, how his journey as a ninja would be different, and what new abilities he could possess. All these aspects make it an interesting and popular fanfiction concept.