A plotline could involve Naruto's Kitsune heritage being related to some ancient mystery in the Inuyasha world. For example, there could be a prophecy about a Kitsune from another world coming to save the Inuyasha world from a dark force. Naruto then has to discover his true role in this prophecy, all while dealing with the mistrust and different personalities of Inuyasha, Kagome, and the others. There could also be some romantic sub - plots, like Naruto developing feelings for one of the female characters in the Inuyasha world or vice versa.
One possible plotline could be that the female Harry Potter, with her new kitsune powers from the Naruto universe, uses them to fight the dark forces in the Harry Potter world in a different way. For example, she might use her kitsune illusions to deceive Voldemort.
I'm not sure of specific fanfictions off the top of my head. But you can try searching on fanfiction - dedicated websites like Archive of Our Own or FanFiction.net. There, you can use the search filters to look for crossovers between Naruto and Inuyasha where Naruto is depicted as a Kitsune.
Perhaps the story could revolve around the Fem Kyuubi teaching Naruto more about his Kitsune heritage. This could include special jutsu or abilities that only those with Kitsune blood can learn. The plot might also involve Naruto having to protect the Fem Kyuubi from other ninja who fear her power and want to seal her away again.
Well, a plotline could be that Naruto, ignored by his family, starts to explore the darker side of the crossover world. Maybe he gets involved with some shadowy organizations because he feels that no one in his family cares what he does. He could also start a journey to find out why his family is ignoring him. Along the way, he meets various characters who either help or hinder him in his quest. Another possibility is that Naruto, feeling the pain of family neglect, decides to create his own family - like group with his friends in the crossover world and they work together to change the situation for the better.
If we were to think about the crossover without the 'lemon' aspect, a plotline could involve a common enemy that forces the characters from Naruto and Shuffle to team up. For instance, a powerful dark force that threatens both worlds. Naruto could bring his combat skills and determination, while the characters from Shuffle could contribute their unique magical abilities. This would create a story full of action, cooperation, and the exploration of two very different fictional universes.
One possible plotline could be Naruto finding a new family in the crossover world. For example, if it's a crossover with the Harry Potter universe, he might be taken in by the Weasley family who see his potential and give him the love and support he never had in his own family. Another plotline could be Naruto using his skills to prove his worth to his neglectful family after being influenced by the new world he's in. He could return to his own world with newfound confidence and make them realize what they missed out on.
In some plotlines, Naruto might teach the X - Men some of his ninja techniques as a godlike or immortal being. This could help the X - Men in their battles. There could also be a love interest story where Naruto, with his unique powers, catches the eye of a certain X - Men character. His immortality could bring up questions about his place in the X - Men universe and how he'll age or not age compared to the others. Additionally, there could be a plot where Naruto has to hide his true power level from some in the X - Men world who might fear or want to exploit his godlike or immortal abilities.
A plotline might involve the search for a special item or power to ensure the safety and well - being of the unborn baby. They could travel to different places, meet new characters, and overcome various obstacles along the way. And of course, there could be the emotional and relationship - building aspects as they prepare for this new chapter in their lives, like dealing with Inuyasha's insecurities about being a good father and Sango's hopes for their family's future.
In this fanfiction, the idea of Naruto's transformation into a kitsune - like form could be really cool. It could be a physical transformation that gives him new powers and a new appearance. His speed, strength, and agility might all increase. And his relationship with other characters like Sasuke or Sakura could change as they adapt to his new identity as a kitsune.
One idea could be that Naruto discovers he has Kitsune blood in him. This could lead to him having new powers and a different connection to the spirit world. He might be able to communicate with Kitsune spirits and learn ancient Kitsune techniques.