I think Naruto and Dante would be an interesting pairing. Naruto's positive and determined attitude would contrast with Dante's more laid - back but still badass demeanor. They could learn a lot from each other in combat. Another interesting pairing could be Sasuke and Vergil. Both are brooding characters with a thirst for power, and their meeting could lead to some intense power struggles or even a begrudging mutual respect.
Ruby and Dante would be an interesting pairing. Ruby with her innocent and positive attitude could contrast with Dante's more laid - back and devil - may - care nature. They both are great leaders in their own ways and could learn a lot from each other in combat. Dante could show Ruby some new sword techniques and Ruby could show Dante the power of Aura and how it can be used in battle.
One idea could be that Naruto somehow ends up in the Devil May Cry world. He might mistake some of the demons there as similar to the tailed beasts he knows. For example, he could try to 'befriend' a demon in the DMC world thinking it's like how he dealt with Kurama. Another idea is Dante teaching Naruto some swordsmanship. Dante's flashy and powerful combat style could blend well with Naruto's own energetic fighting moves.
One interesting pairing could be Naruto and Rai. Naruto's energetic and determined nature could contrast with Rai's calm and powerful vampire leadership. They could learn from each other, with Naruto teaching Rai about the value of friendship and hard work in the shinobi way, and Rai showing Naruto how to control and enhance his power in a different way. Another pairing could be Sakura and Seira. Sakura's medical skills could be useful in the Noblesse world, and she could bond with Seira over their shared sense of loyalty and protection of their friends.
Naruto and Cayde - 6 would be an interesting pairing. Naruto's energetic and positive personality would contrast with Cayde - 6's sarcastic and somewhat reckless nature. They could learn from each other, like Naruto teaching Cayde - 6 about the importance of friendship and never giving up, while Cayde - 6 could show Naruto some of his cool gadgets and weapons.
Naruto and Oga Tatsumi would be really interesting. Naruto's positive and determined attitude would contrast with Oga's rough and delinquent - like personality. They could learn a lot from each other, like Naruto teaching Oga about the importance of friendship in a more idealistic way, and Oga showing Naruto how to be tougher in a more down - to - earth way.
Kakashi and Jayne. Kakashi is the laid - back but highly skilled ninja. Jayne is the rough - around - - the - edges mercenary. Their interactions would be hilarious. Kakashi could use his Sharingan to outwit Jayne in various situations, and Jayne could introduce Kakashi to some of the more practical aspects of the Firefly universe, like how to barter and survive in a less - than - ideal world.
Naruto and Aragorn would be an interesting pairing. Naruto is a young hero full of energy and determination, while Aragorn is a battle - hardened and noble leader. They could learn a great deal from each other. Naruto could show Aragorn his unique ninja skills, and Aragorn could teach Naruto about leadership and honor.
One interesting pairing could be Naruto and Tyson. Naruto's never - give - up attitude and Tyson's determination would make them a great duo. They could learn from each other's fighting spirits. Naruto could show Tyson how to use his environment and natural energy, while Tyson could teach Naruto some strategies from beyblade battles about anticipating an opponent's moves.
Naruto and Dan Kouzo would be an interesting pairing. Naruto's never - give - up attitude and his powerful chakra could be combined with Dan's strategic thinking in Bakugan battles. They could learn from each other and face challenges together. Naruto could teach Dan about the importance of friendship and determination in a more intense way, while Dan could show Naruto the ins and outs of Bakugan combat.
Naruto and Inuyasha would be an interesting pairing. Naruto's positive attitude and Inuyasha's more gruff nature could create some great character dynamics. They could learn from each other's fighting styles and outlooks on life.