A more heart - warming plot could be Riolu being initially afraid of its own strength and Ash helping it to gain confidence. Maybe Riolu accidentally causes some damage and is scared of using its power again. Ash then trains with it in a special way to show Riolu that its strength can be used for good. This could involve some cute and touching moments between the two as they build a stronger bond.
One idea could be that Riolu and Vulpix are from different regions in the Pokémon world. They meet during a Pokémon trainer's journey. Riolu is often seen as a brave and strong Pokémon, while Vulpix is more mischievous. They could start off as rivals, competing for food or territory, but then gradually become friends as they face a common enemy, like a group of poachers trying to capture Pokémon in the area.
One idea could be that Ash has a strange encounter in a mysterious forest. There, he finds a Riolu in distress. As he tries to help the Riolu, a strange energy transfer occurs, and he starts to take on some of Riolu's characteristics. He might gain Riolu's heightened senses, like its ability to sense auras more acutely. This could lead to new adventures as he has to adapt to these changes while still trying to pursue his Pokémon journey goals.
One possible plot could be that Ash finds a Riolu as his starter pokemon. Riolu is initially very shy and distrustful of Ash. But as they go on adventures together, Riolu starts to open up. They face challenges like battling against Team Rocket who tries to steal Riolu for its potential power. Ash has to train Riolu not just in battle skills but also in trusting him completely. This journey of building trust and growing stronger together could be a great fanfiction plot.
One idea could be a Riolu crossover with the Pokemon Mystery Dungeon world. Riolu could be a new recruit in a rescue team, facing various challenges in dungeons and making new friends among different Pokemon species. Another idea is a crossover with a fantasy world like Harry Potter. Riolu could be a magical creature in Hogwarts, perhaps befriending some of the students and getting involved in the magical adventures there. Or a crossover with a post - apocalyptic world where Riolu uses its fighting abilities to survive and protect other Pokemon.
The fanfiction could revolve around Ash and Riolu's bond. Since Riolu can sense auras, it might be able to sense Ash's strong will and determination. They could go on an adventure to discover more about Riolu's species and its hidden powers. Along the way, they meet other trainers and Pokémon, and Riolu grows stronger with Ash's guidance.
In another plot, Riolu could be a Pokémon that has been abandoned by its previous trainer. Ash stumbles upon it while on his journey. At first, Riolu is very distrustful of humans, but Ash shows it kindness and patience. Through Ash's training methods and the bond he forms with his other Pokémon, Riolu slowly warms up to him and allows itself to be caught.
Well, the plot could involve Ash's transformation into Riolu being a result of some magical or scientific experiment gone wrong. Maybe he has to adapt to his new form and learn to use Riolu's abilities like Aura Sphere. He might also struggle with being recognized by his friends at first.
Well, perhaps Ash could be magically transformed into a Riolu. He might then struggle to adapt to his new form. For example, he would have to learn to use Riolu's unique moves like Force Palm in a completely different way compared to using his Pokémon attacks as a human. He could also face challenges in communicating with his old Pokémon friends as a Riolu.
Well, it could be about Ash finding a lost Riolu in the forest. Ash decides to take care of Riolu and train it. They go on adventures together, facing different Pokemon battles. Riolu could grow stronger under Ash's guidance and they might aim to win a big Pokemon tournament.
One interesting Ash Prince Riolu fanfiction could be about their adventures in a new, uncharted region. Riolu might use its unique abilities to help Ash in battles, and Ash could be portrayed as a prince with certain leadership qualities in this fictional setting.