Another plot could be that Spiritomb is being hunted by an evil trainer who wants to use its dark energy for his own gain. Ash decides to protect Spiritomb. He trains with Spiritomb to unlock new forms or abilities. Together, they face the evil trainer in a big battle. Ash uses his bond with his other Pokémon and Spiritomb's unique powers to defeat the bad guy and in the process, Spiritomb becomes a more friendly and loyal companion to Ash.
Maybe Spiritomb has the ability to travel through different dimensions and Ash accidentally gets caught in one of its portals. They end up in a world where Pokémon and humans have switched roles. Ash has to rely on Spiritomb's knowledge of this strange world to find a way back home. Along the way, they meet other Pokémon that have different personalities in this new world and have many comical and exciting adventures.
The relationship could start with Ash showing kindness to Spiritomb. For instance, when other Pokémon are scared of Spiritomb, Ash offers it some food. This simple act of kindness can be the first step. Then, as they face challenges together like a big storm or a group of wild Pokémon attacking them, they start to trust each other more. Each time Ash defends Spiritomb or Spiritomb uses its powers to help Ash, their bond gets stronger.
One idea could be Ash traveling to a new, mysterious region full of never - before - seen Pokémon. He could encounter a powerful and rare Pokémon that becomes his new partner. Another could be Ash getting lost in a time - warp and having to find his way back while also learning about the past of the Pokémon world.
Another plot could be that Ash enters a high - stakes Pokémon tournament in Cynthia's region. Cynthia becomes his mentor, teaching him advanced strategies, and they develop a strong friendship along the way.
One idea could be Ash and Togepi getting lost in a mysterious forest. They encounter strange new Pokémon and have to work together to find their way out. Another plot could be Togepi getting sick and Ash having to search for a rare herb to cure it. He meets different trainers along the way who either help or hinder his quest.
Another plot idea is that Chikorita falls ill in a new region Ash is exploring. Ash has to search for a rare herb to cure it. During this time, he meets other trainers who either help or hinder his search. This plot would focus on Ash's determination to save his Pokémon friend and the relationships he forms during the search.
One plot idea could be that Ash and Android 21 team up to fight a common enemy in a tournament. Another could be a story where Android 21 tries to understand human emotions through Ash's experiences. Or perhaps a plot where they travel through different dimensions together.
Some plot ideas might include Ash and Hoopa teaming up to rescue a group of Pokémon that have been captured by an evil organization. Hoopa could use its portals to get into the enemy's lair. Another plot could be that Hoopa gets sick, and Ash has to find a way to heal it. He travels far and wide, meeting different Pokémon and people who might have the cure. And there could be a story where Hoopa reveals a hidden world to Ash, a world full of ancient Pokémon and secrets. Ash then has to explore this world with Hoopa and make sure these secrets don't fall into the wrong hands.
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 focusing on how Ash's friends react to the news. They might be shocked at first but then rally around to support her. Another could be Ash dealing with the physical and emotional changes during pregnancy while still trying to pursue her goals.
Well, perhaps in the 'ash in a dress fanfiction', Ash is forced to wear a dress as a punishment by a mischievous Pokemon. This leads to him having to learn new ways of moving and interacting while in the dress. He could also end up starting a new trend among the Pokemon, where they all want to wear dresses like him for fun.