A potential plot could be centered around Ash's role in a prophecy. Since he is the son of Arceus, he is the key to saving the Pokémon world from a great danger. He has to travel to different regions, gather powerful Pokémon, and learn ancient secrets about his father. His friends might initially be skeptical of his new identity but eventually come to support him as he faces numerous challenges and battles against powerful foes.
I'm not sure exactly how many fanfictions exist where Ash is the son of Arceus, but it's a very interesting concept. It could lead to all kinds of plot twists. For example, Ash might have some hidden powers or a special connection to the Pokémon world that others don't. This kind of fanfiction can explore the relationship between Ash and Arceus in ways that the original series doesn't.
One possible plot could be that Ash discovers a threat to the Pokémon world that only Arceus can stop. But Arceus is somehow corrupted or misinformed. So Ash has to fight Arceus to snap it out of it and save the world.
Well, it could be that Ash makes a discovery that goes against Arceus' grand plan and is thus betrayed. Maybe he finds out something about the balance of the Pokemon world that Arceus doesn't want known.
In this fanfiction, it might show Naruto being able to communicate with Pokémon like Arceus can. He could use this ability to gain allies in the form of Pokémon. His friends in the Naruto world might be initially skeptical or even afraid of his new connection. But as the story progresses, they learn to accept it and work together with Naruto and his Pokémon allies to face greater threats that are endangering both the Naruto world and the Pokémon world.
Ash could potentially have the power to control the elements related to Pokemon types. For example, if he encounters a fire - type Pokemon in trouble, he could use his ability to manipulate fire to help it. Also, he might be able to teleport between different regions of the Pokemon world, which would be a very handy ability for his adventures.
Well, one possible plot could be that Naruto inherits some divine powers from Female Arceus. He might use these powers to bring a new era of peace to the ninja world. For example, his powers could be used to end the cycle of hatred more effectively than before.
Maybe. Fanfiction is vast and diverse. 227 chapters is a specific length, but with some thorough searching on fanfiction communities, you might come across a story where Ash is Arceus of that length.
In certain fanfic ideas, Arceus could be influenced by an evil force. This evil force manipulates Arceus into believing that Ash will cause great harm in the future. So, Arceus betrays Ash as a preventive measure, according to the fanfiction plot. However, this is just a fictional concept and not part of the official Pokémon storyline.
One plot idea could be the mystery around how Arceus became pregnant. Since it's a very powerful and almost god - like Pokémon, it could involve some sort of divine intervention or a very special event in the Pokémon world. Maybe other Pokémon are in awe or even a bit afraid of what this could mean for the balance of the world.
A possible plot could be that Ash has always felt a bit different from other trainers. One day, he meets an old Pokémon trainer who knew Sir Aaron and sees a resemblance in Ash. This trainer tells Ash about his possible relation to Sir Aaron. Ash then decides to explore the places where Sir Aaron once was. He discovers that there are certain Pokémon that only respond to him because of his connection to Sir Aaron. As he continues his journey, he has to balance his normal Pokémon training with understanding and using the powers and knowledge that come with being Sir Aaron's son. There could be a final showdown where Ash has to use his unique heritage to save the Pokémon world from a great threat.