Rin from Blue Exorcist would be interesting. If you combine his world with Naruto's, he could learn from Naruto's determination. His demon - slaying abilities could be enhanced with Naruto - style training. Maybe he could learn to use chakra to boost his attacks against demons.
I think Naruto himself would be a great focus. Imagine him in the Blue Exorcist world, his positive attitude and never - give - up spirit could inspire the exorcists. He could also bring his unique ninja skills to the fight against demons, like using his shadow clones to outnumber the enemy demons.
I think Shirou Emiya from Fate and Rin Okumura from Blue Exorcist would be an interesting pairing. Shirou is a self - taught mage who is very determined, and Rin is a powerful exorcist. They could learn a lot from each other's fighting styles and magical abilities.
The character development is a great aspect to focus on. In fanfiction, authors often explore different sides of the characters that we might not see in the original work. For example, they might show a more vulnerable side of Rin Okumura.
Naruto himself would be very interesting. His never - give - up attitude and his ability to make friends easily could lead to some really fun interactions in the Red vs Blue universe. He could be the one to break down barriers between the two groups. Also, his powerful jutsu like the Rasengan and Shadow Clone Jutsu would be a game - changer in the battles of the Red vs Blue world.
Naruto himself would be very interesting. His energetic and determined personality would contrast greatly with the more laid - back and technology - dependent Jetsons. He could bring a sense of adventure and action to their world, and his ninja skills would be something completely new for them to experience.
Chitoge could also be a great focus. Her tough - exterior - but - soft - inside personality would be really fun to explore in the Naruto universe. Maybe she could learn some of Naruto's values like never giving up and it could change her perspective on her own relationships.
One idea could be a crossover where Naruto characters end up in the world of Blue Exorcist. For example, Naruto and his friends could be mistaken for exorcists and get involved in battles against demons. Another idea is to create an alternate universe where the main characters of Blue Exorcist have the powers of Naruto characters. Maybe Rin could have the Nine - Tails' chakra and have to learn to control it like Naruto did.
Kirby would be really interesting. His innocent appearance combined with his extremely powerful abilities makes for a great contrast. He could be the source of both humor and unexpected plot twists. For example, when he first meets Naruto, Naruto might try to offer him ramen, not knowing Kirby's preference for food is more about swallowing enemies. And Kirby's reactions to the different jutsu in the Naruto world could be really fun to write about.
Naruto himself would be really interesting. Imagine him trying to understand and adapt to the samurai way of life. His energetic and determined personality would bring a lot of humor and action as he clashes with the more traditional samurai values at first, but then finds common ground.
Naruto himself would be very interesting. His energetic and determined personality would make for great adventures in the GTA world. He would probably approach the chaos and crime of GTA with his usual enthusiasm, trying to bring justice in his own ninja - way. His ability to make friends easily could also lead to some interesting alliances with GTA characters.
Sakura from Naruto could be an interesting choice too. In a fanfiction, she could travel to the Kaze no Stigma world and study their medical magic, which could be different from what she knows in the Naruto world. This could lead to her developing new skills and having new adventures.