One idea could be that Naruto and Gamora meet in a multiverse - type situation. They have to team up to stop a common enemy that is threatening both their worlds. Naruto could teach Gamora about chakra and she could teach him some of her combat skills.
A plot could involve Naruto and Gamora getting lost in a strange dimension. They need to find their way back home while facing various challenges along the way. Maybe they encounter a powerful being who has the ability to send them back but only if they complete a series of difficult tasks. Along the way, they learn about each other's cultures and values.
One idea could be that Naruto and Daenerys are brought together by a powerful magic or a prophecy. They initially misunderstand each other due to their different backgrounds. Naruto thinks Daenerys is too power - hungry, and she thinks he's a strange warrior. But as they face challenges together, like a new, powerful dark force emerging in both of their worlds, they learn to respect and trust each other. Their combined forces, Naruto's ninjutsu and Daenerys' dragons, prove to be a formidable defense.
A plot could involve Female Naruto being an outcast in the village because of her different way of doing things. Minato, as the Hokage, takes an interest in her and decides to train her personally. He discovers that she has a unique chakra nature that no one has seen before. They embark on a journey to understand this chakra and in the process, they form a strong bond of friendship and mutual respect. Along the way, they face opposition from some of the more traditional villagers who are skeptical of Female Naruto.
One idea could be that Kaguya is reborn in a different form and Naruto has to help her remember her past without her turning evil again. It could involve them traveling through different dimensions in the Naruto world to piece together her memories.
A cool plot could be that Female Hidan is actually an undercover agent for a village that is trying to take down the Akatsuki from the inside. Naruto discovers this and they have to work together secretly to achieve their goal while not being caught by the other Akatsuki members.
There could be a plot where a group of Naruto characters get stranded in the Mass Effect universe. They then have to find a way to get back home. In the process, they interact with different species, learn about the politics and economy of the Mass Effect world, and form alliances. This can lead to interesting scenarios where Naruto's values of loyalty and friendship are put to the test in a new and unfamiliar setting.
One idea could be a story where the catgirl character is a new ninja in the Hidden Leaf Village. She has to learn the ways of the ninja from Naruto and his friends. For example, she could struggle with basic jutsu training, and Naruto helps her overcome her difficulties with his positive attitude. Another idea is that the catgirl is from a different clan that has a special connection to cats in the Naruto universe, and she teams up with Naruto to solve a mystery about a powerful cat - related artifact.
A plot idea could be that Naruto and Sakura are paired up for a special project in the academy that involves exploring an old, abandoned part of the school grounds. They discover some secrets about the founders of the academy and in the process, they overcome their initial differences and become closer friends.
One plot idea could be that female Itachi is a wandering ninja who crosses paths with Naruto during his journey to become Hokage. She has some unique skills or knowledge about an ancient ninja art that Naruto needs to protect the village. They team up and form a friendship based on mutual respect and the common goal of safeguarding Konoha.
One plot idea could be that the female Kurama helps Naruto in a different way than in the original story. For example, she could use her unique chakra to teach Naruto a new jutsu that is crucial for a major battle against a new enemy. And their relationship could be more of a mentor - mentee kind of bond.