A possible plot is that Naruto discovers an ancient jutsu that gives him an even more powerful half - animal form. But this form has a downside, like it drains his chakra really fast. So he has to find a way to master it without exhausting himself. Or perhaps Naruto's half - animal form gets affected by a strange curse that makes him act more like an animal than a human, and his friends have to find a cure.
One idea could be Naruto having the ability to transform into a half - fox more often and struggle with the wild instincts that come with it. For example, he might have trouble controlling his anger during battles. Another plot could be about Naruto befriending other characters who also have half - animal forms and they form a special team. They could go on missions together where their unique abilities are crucial.
One idea could be that Naruto discovers his half - angel half - devil heritage during a dangerous mission. Maybe he starts to have new powers like the ability to heal rapidly (angel side) and also to unleash dark energy (devil side) which he has to learn to control.
One plot idea could be that Naruto discovers his half - angel and half - vampire nature during a dangerous mission. His angel side gives him the ability to heal quickly and have a moral compass that is super strong. The vampire side, on the other hand, gives him enhanced strength and speed at night. Maybe he has to hide this from his friends at first because he's afraid they'll reject him. Another idea is that there's an ancient prophecy about a being like him who will save the ninja world from a new, unknown threat that is related to both the angelic and vampiric realms.
Maybe there's an ancient prophecy in the 'naruto half demon half god fanfiction' world that Naruto is the key to saving the world because of his half - demon half - god heritage. But he first has to unlock all of his powers. This would lead to a journey of self - discovery, where he meets different characters who help or hinder his progress. Along the way, he could also learn about the origin of his unique nature and how it came to be.
Perhaps Naruto's half - brother was raised in a different village by an enemy of Konoha. He initially hates Naruto but as he gets to know the real Naruto and the values of Konoha, he has a change of heart. They could team up to stop a conspiracy that threatens both their villages. He might also have some special skills in espionage which he uses to their advantage.
A possible plot is that a group of evil ninjas are hunting half - demons, and Naruto is in their crosshairs. Sakura vows to protect Naruto at all costs. They go on the run together, and during this time, Sakura discovers that she has a special connection to Naruto's half - demon side. Maybe she has some long - lost family connection to the same demon race, which gives her unique abilities to help Naruto.
Well, a plot could be centered around the origin of Naruto's half - wolf demon form. Perhaps it was a result of an ancient curse placed on his family. He then has to embark on a journey to find a way to break the curse. Along the way, he meets other characters who either help or hinder him. His wolf - demon powers could also attract the attention of powerful enemies who want to use his powers for their own evil purposes.
One plot idea could be Naruto exploring his godly powers. Maybe he discovers he can communicate with spirits on a different level. For example, he could have the ability to see the past and future of the ninja world through his god - half. Another idea is that he has to face off against an ancient evil that only his god - like powers can defeat.
A great plot could be that the animal partner is actually a reincarnation of a powerful ninja's spirit. Naruto discovers this connection over time. The animal helps Naruto unlock new jutsu or powers that were lost in history. It could also be that the animal partner has a connection to Naruto's family, like it was once a protector of the Uzumaki clan. This would tie in Naruto's past and future in a really interesting way.
One idea could be that the half - slayer half - vampire struggles with their dual nature. They might have moments of extreme strength from the slayer side, but then be tempted by the vampire's bloodlust. For example, they could be in a fight against a powerful demon and find that their vampire side gives them an unexpected advantage, like enhanced speed, but they also have to fight the urge to feed on the demon's blood. Another plot could involve them trying to find a way to fully embrace both sides or choose one over the other. Maybe they meet other hybrids and form a group to protect the world in a different way than traditional slayers do.
One idea could be that Naruto discovers a hidden realm where animals have their own ninja clans and kingdoms. He has to learn their ways to gain their trust and help them in a conflict against an evil force that wants to control all the animal chakra. Another could be Naruto being transformed into an animal king himself through some magical jutsu and leading his new animal friends to protect the forest from human destruction.