One idea could be a Mirror Naruto where he has different elemental affinities. For example, instead of wind, he has lightning as his main element and uses it in unique jutsu combinations. Another could be a Mirror Naruto who was raised in a different village and has different values and goals compared to the original Naruto. He might be more focused on stealth and assassination rather than the open - hearted approach of the real Naruto.
A really cool Mirror Naruto fanfic idea would be if he was born with the Sharingan instead of the Nine - Tails. This would completely change his power progression and how he interacts with other characters. He could train with the Uchiha clan and develop his own unique style of using the Sharingan. Also, a Mirror Naruto who is a villain would be interesting. He could use his charisma and power for evil, creating chaos in the ninja world.
One idea could be a time - travel fanfic where Naruto or Sasuke go back in time and try to change certain events. This would allow for a lot of creative storytelling as they interact with their younger selves and try to prevent future tragedies.
One idea could be to create an alternate universe where Naruto has a different elemental affinity from the start. For example, instead of wind, he has lightning. Another could be a fanfic focused on the relationships between the characters outside of the main plot, like how Sakura and Ino rekindle their friendship in a more in - depth way. Or you could write about Naruto's training journey with a different mentor, say Jiraiya's long - lost brother who has a completely different teaching style.
One idea could be a fanfic where Naruto travels to a different dimension where the Akatsuki are the heroes. Another could be a story about Naruto's kids growing up in a world where there's a new threat that they have to face without their parents' immediate help. And a third idea is a fanfic where Naruto discovers a hidden bloodline within himself that gives him unique powers.
Well, in an MLP Dark Mirror Universe fanfic, a possible plot is that the Elements of Harmony are actually used for evil. The ponies who usually protect Equestria are now using the power of the elements to control and oppress others. There could also be a plot where the different pony races are at war with each other instead of living in harmony. Maybe the unicorns think they are superior and are trying to enslave the earth ponies and pegasi. And of course, the fanfic could explore how the friendships that were once strong in the normal Equestria are now broken in this dark mirror world.
In 'naruto wings fanfic', often there are ideas related to the origin of the wings. Are they a result of some new form of chakra? Or perhaps they are a gift from a mysterious entity. The fanfic might also delve into how the wings affect the character's relationships. For instance, do their friends become jealous of their new powers, or do they attract new allies who are interested in the wings' capabilities?
Another interesting aspect could be femto Naruto's impact on the ninja world. Since he would be different in this form, he might introduce new jutsu or ways of thinking. He could inspire younger ninjas to think outside the box and break traditional boundaries in their training and combat.
Another idea is a crossover where the world of Naruto is invaded by Honkai. The shinobi have to learn about Honkai technology and powers quickly to defend their villages. Sakura might study Honkai biology to find a way to counter the threat, while Sasuke could be intrigued by the dark powers of the Herrschers and struggle with the temptation to use them for his own goals.
One interesting idea could be how the laws of the Naruto universe are explored. For example, how the ninja code functions as a form of law among the ninja clans. It might also look at how different villages have their own rules regarding things like chakra use and shinobi behavior.
One idea could be Naruto becoming a mentor to a new generation of ninja. He could pass on his unique skills and the importance of friendship and hard work.
A fanfic could also focus on a character from Kuroinu coming to the Naruto world. This character could be initially confused but then starts to understand the concept of ninja and tries to adapt. Maybe they form an unlikely alliance with Naruto to achieve a common goal, like saving both their worlds from a greater threat.