One common theme is the struggle for acceptance. Since the character is half - demon, they often face discrimination from both humans and demons in the Naruto universe. Another theme is the exploration of new powers. As a half - demon, the character usually has a unique set of abilities that they need to discover and master.
Well, Naruto would obviously be the main character as the story is centered around him being a half - demon. There might also be characters like Sasuke. Sasuke could be involved in Naruto's journey, perhaps initially being suspicious of Naruto's new powers but later coming to accept and even help him control them.
Another plotline might involve Naruto being ostracized by some in the village due to his half - demon nature. This could lead to him having to prove himself not only as a ninja but also as someone worthy of acceptance, despite his different heritage. He could form unexpected alliances with those who also feel like outcasts.
Orochimaru would be a great main antagonist. He's always been interested in power and the secrets of the body. Naruto's half - demon fox nature would be a prime target for his experiments. He could try to extract the power of the demon fox from Naruto, or use Naruto as a way to create his own brand of super - soldiers with demon - like powers.
One idea could be exploring how Naruto's half - demon fox nature affects his relationships differently. For example, some friends might be more fearful or in awe of his power. Another could be a story where Naruto has to go on a journey to fully understand and control his half - demon fox side without the help of his usual mentors, relying only on his own instincts and new, unexpected allies he meets along the way.
One great 'naruto half demon fanfic' is 'The Half - Demon's Path'. It follows the journey of a character who is half - demon in the Naruto universe, facing unique challenges and forging new alliances. Another one could be 'Half - Demon Naruto's Ascent' which shows how Naruto, in this fan - created half - demon version, overcomes obstacles with his newfound powers and abilities.
One common theme is the struggle for identity. Naruto, with his half - angel half - demon nature, often has to figure out where he belongs. Another theme is power control. Balancing the angelic and demonic powers can be a huge challenge.
One possible fanfiction idea could be that Hinata discovers Naruto has a half - demon side that he's been hiding. This could lead to a lot of interesting character development. Hinata, being the understanding person she is, might help Naruto come to terms with this part of himself. It could also introduce new powers and abilities for Naruto, and perhaps a new level of relationship between the two.
One possible plot could be Naruto discovers his half - angel, half - demon fox nature during a life - threatening battle. His angel side gives him the ability to heal and purify, while his demon fox side provides immense power. He struggles to balance these two sides as he faces powerful enemies who are either attracted to or threatened by his unique nature.
It could be a powerful ninja from another village who is jealous of Naruto's half - demon half - god powers. He might see Naruto as a threat to his own village's dominance and try to eliminate him.