One possible reason could be some kind of strange chakra infusion. Maybe he comes into contact with a powerful and mysterious chakra source that mutates his body in a way that causes tails to grow. Another reason might be related to some ancient curse or prophecy. It could also be the result of a new jutsu he attempts that goes wrong and has unforeseen physical consequences.
There were novels similar to Little Nine Tails in the Naruto Leaves:
1:"The Ming Dynasty Can't Die", Author: Key Big Shot
2."Dragon Ball: I, the Wukong cub, have a combat power of more than 100 million." Author: Rare steak, thank you.
3. Yunhua Yao Ji, Author: Qi Zong
The following is a detailed introduction of these novels:
1."The Ming Dynasty Cannot Die": Cross the Ming Dynasty and become Zhu Youjian.
In order to avoid the tragic end of Zhu Youjian, he could only work hard to make the country prosperous, develop and reform, and rejuvenate the country through science and technology!
In his hands, Da Ming absolutely could not die.
And he could not be the ruler of a subjugated country!
2:"Dragon Ball: My Baby Goku's Combat Power Has Surpassed 100 Million": Sun Wukong: "With my previous life's experience, it's not too much to transform into a Super Saiyan before going down the mountain, right?"
"That bastard Kakarot, why is he always stronger than me?"
Virus,[I will become stronger when I meet someone stronger. My strength is unknown!]
"So Wukong is so handsome when he grows up!"
"Thank you, Buma!"
"Mr. Wukong, here's your document."
Just as Sun Wukong was immersed in enjoying his family life.
His future daughter appeared in a time machine.
"Daddy, I'm your daughter from the future.
Mommy misses you very much.
Someone stole your body and started a massacre in the future world…"
Sun Wukong: "So, I wasn't reborn. It was my soul that traveled through time."
It turned out that he, who had been reborn as Sun Wukong in his previous life, had married Buma and killed Vegeta, who had invaded Earth.
Buma also gave birth to a cute daughter for him.
However, when he fought against Sarroux,
A viral heart disease outbreak, no one to help hold the fort.
There was no time to receive treatment, so he was sacrificed.
In the end, when he woke up again, he returned to this world and became the Saiyan cub Sun Wukong again.
3.<<Yunhua Yao Ji>> I am a demon exorcist that is not very popular.
However, his ability was not weak. Just when I thought that I was going to spend my life calmly slaying demons. I lost my blade.
A demon slayer losing his blade is no different from losing his life, but I found another blade.
This saber had a human-shaped saber spirit.
The following is the story of how I brought the idiotic demon servant and the human-shaped saber spirit with facial paralysis (crossed out) around the world to eliminate demons.
Why did he have to exterminate demons? It was not a matter of national hatred. It was purely a matter of profession.
This book does not cultivate immortality.
You can read these novels on Qidian Chinese Network.
In certain fanfiction, Naruto is indeed the Ten - Tails. This could be a really cool concept as it combines Naruto's already powerful nature with the ultimate power of the Ten - Tails. It might lead to stories where Naruto has to struggle with the dark side of such power, or he could use it to bring about a new era of peace in the ninja world. Maybe he would have to face off against old enemies who are now even more afraid of his new - found strength.
Maybe through new jutsu or abilities. The fanfiction could give Naruto some unique power that allows him to communicate or negotiate with the Nine - Tails on a different level. He could use this power to show the Nine - Tails a different perspective, like the potential for harmony between them instead of constant struggle.
In this fanfiction scenario, their bond as brothers would be really strong. Sonic in his Werehog form might be a bit more protective of Tails. They could get into all sorts of scrapes, like facing off against new villains who are only active at night. Tails would be right there by Sonic's side, using his flying ability to scout ahead and warn Sonic of any danger.
Well, initially, Naruto might show kindness towards the Nine - Tails despite it being a powerful and somewhat feared entity. He could try to communicate with it on a deeper level. The Nine - Tails, in turn, might be intrigued by Naruto's tenacity. As time passes, they begin to trust each other more. Naruto may share his dreams and fears with the Nine - Tails, and the Nine - Tails might start to see Naruto as someone worthy of its friendship.
Yes, in some fanfictions, Naruto is often depicted as having a very special connection to the Nine - Tails that goes beyond the normal relationship in the original story. For example, he might be able to fully control the Nine - Tails' power in ways not shown in the canon, or they could have a mental bond that allows for unique forms of communication and cooperation.
A new character could be introduced as the host. This character could be from a hidden clan with a special ability to bond with the Eleven Tails. They would bring a fresh perspective to the story, and their journey of coming to terms with the power of the beast and its implications in the Naruto universe would be an exciting plotline.
Another unique exploration could be through a shared goal that is not related to the main Naruto plot. For example, they both want to protect a special place in the spirit world that has significance for the Nine - Tails. To do this, they have to work together in a way that they haven't before. Naruto has to use his human skills and the Nine - Tails has to use its tailed - beast powers in harmony. This would show a different side of their relationship, one based on mutual respect for each other's abilities.