In a fanfiction, Ash and Sakura could be transported to a parallel dimension. Here, they discover a new form of energy that is both similar to chakra and Pokemon energy. They have to figure out how to control this energy while also finding a way back home. Ash's bond with his Pokemon is put to the test as they face new and unfamiliar challenges. Sakura has to use her medical knowledge not only for herself and Ash but also for the Pokemon that get injured. They face many trials in this dimension, from battling strange creatures to solving complex puzzles.
Well, imagine a scenario where a dark force is spreading across both their worlds. Ash and Sakura are chosen to be the ones to stop it. Ash brings his team of Pokemon, and Sakura brings her ninja skills. They travel through different regions, from the lush forests of the Pokemon world to the hidden villages of the Naruto world. Along the way, they meet new characters, some of whom join their cause, and others who try to stop them. They have to learn to work together, with Ash teaching Sakura about Pokemon training and Sakura teaching Ash some basic ninja moves.
Ash could have adventures like exploring a hidden part of the school that has a connection to a rare Pokemon. Maybe there's an old library in the school that holds secrets about legendary Pokemon, and Ash stumbles upon it during a game of hide - and - seek with his new friends.
Maybe they get involved in a Pokémon beauty contest in Kalos. May, being interested in contests, would be excited to participate. Ash could support her and also learn about the different aspects of Pokémon contests in Kalos. Along the way, they meet new friends and face off against some tough competitors.
In a highschool fanfic, Deidara and Sakura could go on an adventure in the school's abandoned attic. They hear rumors of a hidden treasure or a mysterious artifact. Deidara is excited by the idea of finding something unique for his art, and Sakura is curious about the history behind it. As they explore, they face challenges like old booby traps and must rely on each other's strengths to get through.
He could have a Froakie. It's a common and cute starter in Kalos. Maybe also a Skiddo for traveling across the Kalos landscapes. And a Bunnelby would be a nice addition for its digging abilities.
She could have an adventure where she stumbles upon a rare Pokemon egg. She decides to take care of it, not knowing what kind of Pokemon will hatch. As she travels, she faces difficulties in protecting the egg from thieves. Eventually, a shiny Dragonair hatches from the egg, and they form a strong bond.
He could have adventures exploring new regions in the Pokemon Horizons universe that haven't been shown in the main series. Maybe he discovers a hidden island full of rare and unique Pokemon.
An adventure where they have to stop an evil force that is threatening both of their worlds. Naruto could bring his knowledge of sealing jutsu to prevent the evil from spreading, and Noire could use her leadership skills to gather allies.
In fanfiction, Ash could have many new Pokemon adventures in Kalos. He might meet new Pokemon species unique to Kalos, like Greninja. He could also face off against new trainers with different battle styles. And perhaps make new friends along the way who help him understand the Kalos region better.
A possible adventure could be rescuing a kidnapped friend. Orochimaru's daughter has some leads on the kidnapper's hideout because of her underworld connections she inherited from her father. Sakura is determined to save their friend. When they reach the hideout, they have to fight off the kidnapper's guards. Orochimaru's daughter uses her stealth skills to infiltrate the hideout unnoticed, while Sakura uses her powerful combat skills to take on the guards directly. Together, they manage to rescue their friend and become closer as a result of the experience.
They might encounter a group of bandits. Sasuke would use his Sharingan to quickly assess the situation and his combat skills to fight them off. Sakura would be right beside him, using her medical ninjutsu to heal any minor wounds they get during the fight.