A cool plot for Ninja Gaiden crossover fanfiction could be a crossover with the Legend of Zelda series. Imagine Ryu Hayabusa exploring the vast lands of Hyrule. He could encounter Link and they could go on a quest together. Ryu could use his ninja skills to traverse the dangerous dungeons, and Link could show him the secrets of the Triforce. They would face enemies like Ganon's minions together, with Ryu's katana and Link's sword and shield making a formidable combination.
For a Ninja Gaiden crossover fanfiction, a crossover with the Final Fantasy series might be interesting. Ryu could end up in a world full of magic and different races. He could team up with a group of Final Fantasy characters, like Cloud and Tifa. They could be on a mission to stop an evil force that is using both magic and technology. Ryu's martial arts skills would be a great addition to their group, and he could learn some magic from them in the process.
One idea could be to have characters from 'Naruto' and 'Ninja Gaiden' team up to face a new, powerful enemy that threatens both of their worlds. For example, they could fight a demon that has the ability to manipulate time, forcing the ninjas to use their unique skills in unexpected ways.
One idea could be exploring the untold adventures of Naruto's father, Minato, during his own ninja days. Maybe his secret missions and how he met Naruto's mother.
A really cool plot could be that Orochimaru somehow manages to open a portal to the Ninja Gaiden world. He starts experimenting with the creatures and powers there. Naruto and his friends have to enter this new world to stop Orochimaru, and they meet characters from Ninja Gaiden who help or hinder them along the way.
One idea could be a crossover where Harry Potter characters are transported to the Ninja Gaiden world. For example, Harry could find himself in a situation where he has to learn ninja skills to survive. He might team up with Ryu Hayabusa and they could fight against the Death Eaters and the demons from Ninja Gaiden together. This would create an interesting dynamic as Harry's magic and Ryu's ninja abilities would complement each other in combat.
A good character to include in Ninja Gaiden crossover fanfiction is Bayonetta. Her over - the - top combat moves and witchcraft powers would be a great addition. Also, Ezio Auditore from Assassin's Creed. He and Ryu could exchange ideas about stealth and assassination techniques. And then there's Kirby. His ability to copy abilities could lead to some humorous and unique interactions with Ryu, especially if he copies Ryu's ninja moves.
A crossover with the X - Men could also be cool. Picture the Turtles in the mutant - filled world of the X - Men. They might have to deal with the complex politics of mutants while also facing off against villains like Magneto. The Turtles could learn from the X - Men's experience in dealing with a world that fears and hates mutants, and vice versa.
One idea could be a crossover with the Power Rangers Dino Charge. The Ninja Steel Rangers could team up with the Dino Charge Rangers to fight a common, powerful enemy that threatens both their worlds. They could combine their powers and weapons in unique ways, like creating a new zord by merging the Ninja Steel Megazord with the Dino Charge Megazord.
Another plot could involve Sarada going on a journey to find out more about her father, Sasuke. She could encounter people who knew Sasuke in his younger days and learn about his past misdeeds and heroic deeds, which would shape her understanding of him and herself as his daughter.
One idea could be that the Ninja Storm Rangers cross over with another ranger team from a different season. They could combine their powers to fight a super - powerful villain that neither team could defeat alone. For example, the combined ninja and ranger powers could create new attack moves and strategies.
Naruto and Ryu Hayabusa would be an amazing pair. Naruto's exuberant and never - give - up attitude combined with Ryu's stoic and highly skilled fighting style would create a great dynamic. They could learn from each other's determination and combat strategies.