Maybe a fanfiction where Konan discovers a secret about Itachi that could change the way Naruto views him. This could lead to a complex web of relationships and a journey of self - discovery for Naruto as he tries to figure out who to trust. The story could also explore Konan's past more deeply in relation to this new discovery.
A plot could involve Itachi's spirit being summoned by Naruto and Konan in a time of great need. They need his wisdom and combat skills to deal with a mysterious dark force that is spreading across the ninja villages. As they fight together, they also share stories of their pasts, and Naruto and Konan learn a great deal from Itachi about sacrifice and loyalty.
One idea could be Naruto forming a unique bond with each member of the harem in different ways. For example, with Konan, he might discover her love for art and they could bond over creating origami together. Another could be Naruto teaching his harem members some of his ninja techniques, which would lead to interesting training sessions and character development.
Perhaps in this fanfiction, Naruto and Konan's families are brought together because of a mysterious illness that only their combined family lineages can cure. They have to search for ancient remedies and along the way, they learn about each other's family histories and traditions. Their kids could play a crucial role in finding the cure, using their own budding skills and the bond between the two families.
A really interesting plot would be if a mysterious force starts merging their two worlds together. Naruto and Konan find themselves in the middle of chaos as their friends and enemies from both worlds start interacting. They must figure out how to stop the merge before it destroys both their worlds. Along the way, they might develop a deeper understanding and even a friendship.
A great plot could be that fem Naruto and Konan are forced to fight against each other in a tournament set up by a powerful and devious ninja. But as they fight, they realize they are being manipulated and decide to join forces instead to take down the real enemy behind the tournament. Or perhaps fem Naruto has a prophetic dream about Konan being in danger, and she sets out on a journey to protect her. Along the way, they encounter various challenges that test their friendship and skills. Also, there could be a plot where Konan teaches fem Naruto some of her unique paper - based jutsu, and in return, fem Naruto shows Konan some of her Uzumaki clan secrets.
One idea could be that Naruto, with his unique charm and strength, gradually attracts Konan and other characters into his 'harem'. For example, they could go on adventures together, facing various threats in the Naruto universe, and during these experiences, their relationships deepen. Naruto could use his ninja skills to protect them, and they in turn offer different forms of support, like Konan using her paper abilities for strategic advantages.
One idea could be that baby Naruto somehow crosses paths with Itachi in a secret mission. Maybe Itachi is on a mission in Konoha and stumbles upon baby Naruto who has an unusual chakra flare. Itachi, being curious, decides to keep an eye on him without revealing himself. This could lead to a series of events where Itachi's actions unknowingly protect Naruto from some early threats.
One idea could be that Itachi survives his battle with Sasuke and teams up with Naruto to face a new, powerful enemy from the Otsutsuki clan. They combine their unique skills, Naruto's Rasengan and Itachi's Sharingan abilities, to take on this threat.
A possible plot could involve Female Itachi being an outcast in her own clan because she has different ideals. Naruto, who always believes in people, befriends her. They then start a journey to prove that her ideas can bring peace to the ninja world, facing opposition from both their own and other clans.
One idea could be a story where baby Itachi meets a young Naruto in a sort of alternate universe. Maybe Naruto stumbles upon a hidden place where baby Itachi is being kept safe. They form an unlikely friendship, and Naruto's positive energy starts to influence Itachi in a way that makes him question some of the darker paths he might take in the future.
One idea could be exploring Itachi's time in ANBU and how Naruto might have influenced his decisions secretly. Maybe Naruto, with his unique way of seeing people, could have made Itachi question his path in the ANBU more deeply.