Fanfiction can take many forms, and the idea of Ash and Jessie in a'slave' - related scenario might be a very dark and alternative take. In the official Pokemon lore, they are rivals, and Ash is always about friendship and kindness. This kind of fanfiction could be seen as a way for some writers to break boundaries, but it's not something that would be widely accepted in the general Pokemon fan community.
I'm not a big fan of the'slave' concept in fanfiction as it often goes against the positive and friendly nature of the Pokemon world. However, some might write such fanfictions to explore power dynamics in a different way. But it's important to note that this is not in line with the main themes of the Pokemon series.
Well, if we were to consider this, perhaps in a very dark and alternate universe, Ash could be captured by Jessie's team and made into a slave to do their bidding. Maybe he has to perform tasks like finding rare Pokemon for them or doing all the grunt work at their base. But again, this is a very far - fetched and not very in - line - with - the - spirit - of - Pokemon idea.
The 'Ash May Slave' concept might change the relationships in the fanfiction. For instance, they might have to rely on other characters in new ways, like forming alliances with Pokemon or trainers they wouldn't normally interact with. This can create a more complex and interesting web of relationships within the story. Also, it can change how we view their own Pokemon. Their Pokemon might become more than just battle partners but also symbols of hope and freedom for Ash and May.
In the canon storyline, Ash and Jessie are mostly rivals. But in fanfiction, they can become friends or even more. The relationships are more fluid and can be explored in ways that the original story doesn't allow. For example, they might end up traveling together in fanfiction, which would never happen in the show.
In some Pokemon fanfictions, Jessie might be depicted as falling for Ash. Fanfiction allows for creative interpretations of characters' relationships. However, in the official Pokemon series, there is no such indication. So it really depends on the specific fanfiction and the author's creative vision.
One common scenario is when Ash helps Jessie in a difficult situation. For example, if she is injured during a battle and Ash shows great care for her. Another is when they are forced to work together towards a common goal, like saving a group of Pokemon. During this time, Jessie might start to see Ash in a new light.
In this fanfiction concept, Ash's adoption could be a very heartwarming story. Maybe he meets an orphaned child during his travels. Ash, with his kind heart, decides to take the child under his wing. It could be a chance for him to pass on his knowledge of Pokemon and values like friendship and perseverance.
In a fanfiction of Ash in the Unova League, it could focus on his relationships with his Pokemon during this journey. Maybe Pikachu has a special moment of growth, or he catches a new and rare Pokemon that becomes crucial in his battles in the league.
One possible fanfiction could be about Ash finally facing the Elite Four after a long journey of training. He might have new and powerful Pokémon by his side, and the battles could be intense. For example, his Pikachu could have evolved into a new form, giving him an edge against the Elite Four's strong Pokémon.
A fanfiction could center around Ash having a special training session with the Cerulean Sisters. Since they are known for their water - type Pokémon, they could teach Ash some unique techniques for his own water - type Pokémon. This could lead to Ash's Pokémon evolving or becoming stronger in unexpected ways, and also strengthen the bond between Ash and the sisters.
One possible story could be that Ash and Dawn meet in Kalos and decide to team up for a Pokemon tournament. They bring their unique skills and Pokemon from their respective regions and face many challenges along the way, like dealing with tough opponents and adapting to the new Kalos Pokemon.