Link from The Legend of Zelda series could be a great partner for Ryu Hayabusa. Link has his trusty sword and shield, and his ability to solve puzzles and traverse different terrains. Ryu Hayabusa's ninja skills would blend well with Link's adventuring spirit. They could be on a quest to rescue Zelda, who has been kidnapped by some dark force that also threatens Ryu Hayabusa's homeland. Their combined skills would make for an exciting story as they face various enemies and challenges along the way.
Sonic the Hedgehog could be an unexpected but interesting character to pair with Ryu Hayabusa. Sonic's super speed and Ryu Hayabusa's ninja agility could create some really fast - paced action scenes. Maybe in a world where an evil scientist has created a device that is sucking the life out of both their worlds, Sonic and Ryu Hayabusa have to work together. Sonic can quickly get to different locations, while Ryu Hayabusa uses his combat skills to take on the robotic minions of the scientist.
One idea could be a crossover with a popular RPG like Final Fantasy. Ryu Hayabusa could be transported to the world of Final Fantasy and team up with the main characters to fight a common enemy. He could bring his ninja skills and unique weapons to the table, adding an interesting dynamic to the battles and the story.
Luffy from 'One Piece' could also be an interesting crossover. Luffy's stretchy abilities combined with Ryu's martial arts would make for some unique fight scenes. They could also learn from each other's determination and loyalty to their friends.
Perhaps the fanfiction could revolve around Naruto time - traveling to the world where Ryu Hayabusa exists. There, he witnesses Ryu's battles and is in awe of his strength and honor. Naruto then decides to train under Ryu to become stronger. During this training, Naruto has to adapt to a different style of combat without his usual ninja tools. He learns to rely more on his body and speed, like Ryu. This experience changes Naruto's perspective on fighting and when he returns to his own world, he brings back a new sense of confidence and fighting ability.
Yes, there are some. You can start by checking out fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'helena x ryu hayabusa' on their platforms and you'll likely find a variety of stories.
If it was a crossover with the Lord of the Rings, Aragorn could be paired with Darth Vader. Aragorn is a noble and skilled warrior, and his leadership skills would contrast with Vader's tyrannical rule. They could start as enemies, but as they learn more about each other's worlds and the threats they face, they might form an uneasy alliance to defeat a greater evil.
One possible plot could be that they team up to fight a common enemy. Maybe a powerful and ancient evil has emerged, and their combined skills are needed to defeat it. Along the way, they learn to trust and respect each other more deeply.
Another possibility is that some of the more power - hungry ninja from Naruto's own world might become antagonists. They could be jealous of Naruto's new connection with Ryu Hayabusa and the potential power and knowledge he could gain from it. These ninja might try to undermine Naruto or even try to harm Ryu to prevent Naruto from getting stronger. Maybe some of the rogue ninja or the hidden enemies within the ninja villages would see this as an opportunity to make a move against Naruto.
There could be a fanfiction where they are on a quest to find a lost artifact. Along the way, Momiji's skills as a kunoichi and Ryu Hayabusa's ninja abilities complement each other, and they start to develop a deep bond. They might have some tense moments when they are nearly caught by enemies but manage to escape through their combined efforts.
Well, a popular type of 'naruto ryu hayabusa fanfic' could involve Ryu Hayabusa teaching Naruto some of his unique fighting techniques. Naruto, being eager to learn, would quickly adapt and use these new skills in his battles against the Akatsuki. This would add a new dimension to Naruto's combat abilities and make for an interesting read.
Vegeta. Since they have a long - standing rivalry in the Dragon Ball series, a crossover where they have to team up against a greater threat would be great. They could learn to work together better while still maintaining their competitive banter.