The plot could involve Naruto being part of a secret clan that has red hair as a symbol. He discovers this fact when he accidentally activates a hidden jutsu that only members of this clan can use. This jutsu might be super powerful but also dangerous. Naruto then has to learn about his clan's history, which is filled with both great deeds and dark secrets. He must decide whether to embrace this new part of his identity and use the power for good or reject it to stay true to his old self.
One possible plot could be that Naruto is born with red hair due to some strange genetic mutation in the Uzumaki clan. He then somehow gains the Rinnegan, perhaps through a powerful encounter or a hidden inheritance. With these new features, he might face challenges from both within the village who are suspicious of his new powers, and from outside threats who see him as a greater threat or a valuable asset. He could embark on a journey to master these powers and prove himself a worthy protector of the village, all while facing off against new and old enemies.
One possibility is that it gives him a more mysterious and alluring look. In fanfiction, authors often use physical changes to symbolize a character's inner transformation or special powers. Black hair and red eyes might signify a new, more powerful Naruto, perhaps with a connection to some ancient or dark power source.
One possible storyline could be that Naruto is born with red hair due to some sort of genetic mutation or a hidden family trait. This could lead to him being ostracized in the village at first as he looks different from the norm. But then he uses this unique feature to his advantage, perhaps by standing out more in combat or in his ninja training, as his red hair makes him more recognizable and intimidating.
Well, it might be the result of a powerful curse or a blessing from a god - like being. In the Naruto universe, there are many powerful entities. If one of them decided to bestow this unique power on Naruto, it could lead to the development of the red Rinnegan. Another idea is that it could be a side - effect of a new jutsu he tries to master. Some jutsus have unforeseen consequences, and this could be one of them.
One possible plot could be that Naruto discovers a hidden power within himself that unlocks the Rinnegan. This new power could make him face new and even more powerful enemies. He might have to learn to control the Rinnegan's abilities, which are different from his normal chakra powers. For example, the Rinnegan can allow for space - time manipulation. Naruto would struggle at first, but with the help of his friends, he would gradually master it and use it to protect the Hidden Leaf Village from a new threat that only the Rinnegan - powered Naruto can defeat.
Perhaps in the fanfiction, the pacifier is a magical item. It could be that Naruto discovers the pacifier and when he uses it, he gains some sort of unique power. For example, it might allow him to communicate with animals in a new way or give him enhanced strength but only when the pacifier is in his mouth. This would lead to some interesting situations where he has to keep the pacifier safe while using its power to fight enemies.
Well, perhaps in this fanfiction, Naruto acquires Kamui due to some sort of strange chakra experiment gone wrong. And then he has to learn to control it quickly. He could start by training with Kakashi, who has experience with Kamui. Together they figure out new ways to combine Naruto's regular jutsu with the Kamui ability, like making a Rasengan that can be teleported right into the enemy's chest using Kamui.
In this fanfiction, the red - haired character with chakra chains could be a reincarnation of an ancient ninja. The chakra chains are a remnant of that past life's power. Naruto, being the protagonist, would be intrigued by this new character. They could team up to face a new threat that only their combined powers can defeat. The red - haired character could teach Naruto new ways to control and utilize his own chakra, based on their knowledge of the chakra chains.
One possible storyline could be that Naruto's red hair is a sign of some special power or lineage. Maybe it links him to a long - forgotten clan. In this fanfiction, the village might initially be suspicious of him because of this strange hair color, but as he grows, he discovers that it gives him unique abilities like enhanced fire - based jutsu or the ability to communicate with certain mythical creatures associated with the color red in ninja lore.
Well, one possibility could be that Naruto is part of a secret clan with these unique traits. Maybe his red eyes are a sign of a special power, like the ability to see chakra in a different way. And the white hair could be related to some sort of genetic mutation or a result of a powerful jutsu used on his family in the past. It could also be that he's under a curse that gives him these features and he has to find a way to break it while still being the hero we know.