I haven't read this fanfic specifically. But generally, if Naruto is the son of Sephiroth in this fanfic, it would be a very interesting crossover concept. It might combine the ninja world of Naruto with the unique elements from the world where Sephiroth exists, like different powers and cultures.
Sure, there are. Some writers focus on the relationship in a more platonic or adventure - based way. For example, they might explore how Naruto and fem Itachi could team up to face a common enemy in the Naruto universe. These types of fanfics usually emphasize the bond between the characters without any inappropriate content.
In many 'naruto x fem foxy x fem kyuubi fanfic', the theme of redemption can be seen. Maybe the fem foxy or fem kyuubi characters have some sort of past they need to make up for. And Naruto, being the protagonist with a big heart, could be involved in their journey of redemption. Also, the theme of family or found family might be there. They could form a unique bond that is like a family, which is a really heartwarming aspect in some of these fan - created stories.
Common themes in 'naruto x fem naruto fanfic' include acceptance. The female Naruto may face some resistance or have to find her place in the world, so acceptance is a big part. Romance can also be a theme, although not always in a traditional sense. It could be more of a deep connection between the two versions of Naruto. Also, the theme of power and how fem Naruto wields it or develops it is often explored.
I'm not sure specifically as I haven't read that exact fanfic. But generally, it might be a story where Naruto, who is in a godlike state, has some sort of connection or interaction with Sephiroth. It could involve Naruto taking on Sephiroth's characteristics or the two of them being in a strange new world together.
One great fem Madara x Naruto fanfic is 'A Different Path'. It explores an alternate universe where Madara is female and her relationship with Naruto unfolds in a really interesting way. The author does a great job of building their connection through various adventures and challenges they face together.
One idea could be to have Naruto enter the world of James Bond. Maybe he's on a mission to protect a special scroll that has secrets important to both the ninja world and the international espionage world that Bond is a part of. The fem James Bond could be initially skeptical of Naruto's abilities but soon realizes his unique skills in combat and stealth are invaluable.
Well, one place to look could be some fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'naruto x fem foxy x fem kyuubi' on there and you'll likely find a bunch of different stories. However, the quality can vary greatly, so you might have to read through a few to find ones that really suit your taste.
The unique combination of two very different universes makes it stand out. Naruto's world is full of ninjas, with a focus on teamwork and chakra. Sephiroth's world has its own set of rules, often with more of a focus on individual power and a different kind of magic or energy. Merging these two in the idea of Naruto being Sephiroth's son creates a fresh concept.
The other female Bijuu are also main characters. Each of them may bring different elements to the story. They could have distinct personalities, abilities, and backstories. For example, one female Bijuu might be more calm and wise, while another could be more hot - tempered. Their interactions with Naruto and with each other are important aspects of the story.