It could be a new character who is introduced as the descendant. Maybe a young ninja who has always felt a bit different from the others in their village. They start to have strange dreams related to Alice and then begin to uncover their unique heritage.
Another option could be Sasuke. He has always been on a journey of self - discovery. If he were the Naruto descendant of Alice, it would add another layer to his character. He could use Alice's powers, which might be more magical and otherworldly, to enhance his combat abilities and his search for power and revenge. His interactions with other characters would also be very different as they try to understand this new aspect of him.
Perhaps Naruto himself could be the descendant in an alternate universe version of the story. This would completely change his story arc as he discovers these new Alice - related powers on top of his existing ninja skills. It would make for a very interesting and complex character development as he tries to balance the two different power sets and what they mean for his place in the Naruto world.
It could be Naruto himself. Imagine if Naruto was secretly a descendant of Sparda. He would already have his own powerful chakra and then add the powers from Sparda's bloodline. It would make him an even more formidable force in the ninja world.
Perhaps it could be an existing Naruto character like Naruto himself, but in an alternate universe where he has this Nero connection. This would change his character arc quite a bit as he has to deal with this new aspect of his identity. He might have to learn new skills or face different types of enemies due to his Nero descendant status.
It could be Naruto himself. Imagine if through some magical or mysterious event, Naruto was revealed to be a descendant of Hiei. His already strong will and determination could be enhanced by Hiei's traits, making him an even more formidable ninja.
It could be a new character created specifically for the fanfiction. Maybe a young ninja who discovers their relation to Hagoromo later in life.
It might be Naruto's long - lost relative. This would add an interesting twist as Naruto is already a very powerful and well - known character. His relative having Frieza - like powers would create a lot of drama and new storylines. For example, Naruto might have to help this relative control their powers or deal with the consequences of having such a unique heritage.
The main character could be an existing Naruto character who somehow discovers they have Sesshomaru's bloodline. For instance, Naruto himself could be the one. Imagine if during one of his adventures, he unlocks a hidden power within him that is related to Sesshomaru. This would completely change his dynamic and how he approaches battles and relationships in the ninja world. He would have to learn to control new powers like Sesshomaru's poison claws or something similar.
Well, it could be about a character in the Naruto world who discovers they have a connection to Alice. Maybe they have some of Alice's abilities like being able to traverse strange, dream - like dimensions. This could lead to all sorts of adventures, like using these newfound powers to fight against powerful foes in the Naruto universe who are not used to such strange abilities.
It could be a powerful ninja who has become corrupted by the idea of the descendant's powers. He wants to steal those powers for himself to gain ultimate control over the ninja world. Maybe he has a deep - seated envy of the unique combination of abilities the descendant has.
It could be a rogue ninja who wants to use the descendant for their own power - gain. Maybe someone who believes that by controlling the descendant, they can access Kaguya's ultimate power. For example, a power - hungry ninja who has been researching Kaguya's secrets for a long time.
Obviously Naruto would be one of the main characters. And the descendant of Muu would be the other. There could also be other supporting characters like Naruto's friends, like Sasuke or Sakura.