One plot idea could be a crossover where Naruto gains the power of Amaterasu from Okami. He could struggle to control this new and powerful ability, facing challenges from both within his own village who fear his new power, and external enemies who want to use it for their own evil purposes.
Another idea is that in the fanfiction, the spirit of Okami somehow enters Naruto's world and bonds with him. This bond allows Naruto to access Amaterasu in a unique way, perhaps with different properties than in the original Naruto lore. He then uses this new form of Amaterasu to fight against a powerful new enemy that has emerged, threatening the balance of the ninja world.
A possible plot could be that Naruto discovers a hidden scroll that has the secrets of the Okami and Amaterasu. As he deciphers it, he accidentally unleashes a partial form of Amaterasu. He must then seek out the knowledge to fully control it while also dealing with the consequences of this new power being known to his enemies. His friends and allies are initially skeptical but gradually come to understand and support him in his journey.
One plot idea could be Amaterasu living among humans in her human form and using her divine powers secretly to help them. For example, she might use her ability to control nature to end a drought in a small village. Another could be her forming a friendship with a human artist who, unknowingly, starts to paint pictures that are prophetic due to her influence. A third idea is that she has to hide her identity from a group of hunters who are searching for any signs of the divine, as they believe the gods are causing chaos.
One possible plot could be Naruto discovering his divine heritage. He might gain new powers related to Amaterasu Okami. For example, he could have the ability to control some form of sacred fire or light. This would change his relationship with the other characters. His friends might be in awe or a bit scared at first. His enemies would surely see him as an even greater threat.
One plot idea could be that Amaterasu from Okami is reimagined as a powerful jutsu in the Naruto world. Naruto could accidentally discover this jutsu during one of his training sessions in a mysterious ancient ruin. Another idea is that the main characters from Okami, like Amaterasu or Issun, are transported to the Naruto universe. They could team up with Naruto and his friends to fight against a common enemy, such as Orochimaru who is seeking the power of the Okami realm. A third plot could involve Naruto visiting the Okami world and learning their unique style of combat and magic, which he then brings back to Konoha to use against the Akatsuki.
One idea could be that Naruto discovers a hidden power within himself related to Amaterasu. Maybe during a battle, he accidentally taps into it and has to learn to control this new, unexpected ability. It could be a power passed down through some ancient connection in his family.
A plot idea could be a character with the Amaterasu bloodline being hunted by an evil organization that wants to use their power for their own dark purposes. The character has to constantly be on the run and learn to control their power to fight back.
One idea could be that Amaterasu, in some way, imparts a special power to Naruto. Maybe it's a power that helps him control the Nine - Tails better. For example, the flames of Amaterasu could have a calming effect on the Nine - Tails' chakra.
Naruto's character development might include a deeper sense of responsibility. Since he is the son of Amaterasu Okami, he may feel a greater obligation to protect the world. He could develop new skills not just in combat but also in diplomacy. He has to deal with different factions in the ninja world who have different views on his new status. This would force him to grow and mature in ways he hadn't before.
In a fanfiction, Amaterasu could be cursed, and the only way to break the curse is to find a lemon that has been blessed by the sun god (which could be related to her origin as Amaterasu is a sun goddess). She embarks on a journey through different realms, facing various challenges. She meets new characters who either help or hinder her quest for the special lemon. As she searches, she also uncovers secrets about her past and the history of the world she inhabits.
For Naruto, his development could involve learning to master the Amaterasu power from Okami. He might start off being reckless with it, but as the story progresses, he becomes more in control. This could also lead to his growth in terms of how he is perceived by others, from being seen as just a boisterous ninja to a powerful and respected figure with a new, mysterious ability.
One possible plot idea could be that Naruto discovers the power of Amaterasu and is intrigued by it. He might try to learn more about it, perhaps seeking out the Uchiha clan members or ancient scrolls. This could lead to him facing challenges as not everyone might be willing to share the secrets of Amaterasu with an outsider like him.