Some fanfictions focus on Ash's growth as a trainer in Hoenn. He might learn new battle strategies, for example, adapting to the different types of Pokémon prevalent in Hoenn. There could be plot points around his interactions with Hoenn - native Pokémon species that he hasn't encountered before. And his experiences with the different cultures and traditions in Hoenn can also be central to the story, as he tries to understand and respect them while on his journey.
Ash is the central character. Alongside him, May is crucial as she brings her own story and development. Brock, with his medical and Pokémon - handling skills, is always there for support. Professor Birch also plays a role, being the local Pokémon expert who can offer guidance to Ash. Hoenn's Elite Four members are significant as they represent the ultimate challenges for Ash in his journey towards becoming a better trainer in the Hoenn region.
I'm not sure specifically as I haven't read this particular fanfic. But generally, it might be about Ash's adventures in the Hoenn region with an emphasis on his aura abilities. It could involve his battles, encounters with different Pokémon, and his growth as a trainer in the context of Hoenn.
In many fanfics about Ash's Hoenn journey, his character development is often a key aspect. He might face new challenges that are different from the anime. For example, he could have more complex relationships with his Pokémon. The fanfic might also explore different storylines for his gym battles, like facing stronger opponents or having to use new strategies.
Ash is almost surely a main character in this fanfic. In addition to him, there could be antagonists like Team Magma or Team Aqua leaders. Also, his traveling companions, who might be his friends or other trainers he meets along the way in Hoenn. His Pokémon, such as Pikachu, are also bound to be key characters as they accompany him on his adventures and battles.
One possible plot could be Ash starting his journey in Hoenn, meeting new Pokemon like Treecko as his first partner. He might encounter Team Aqua or Magma early on and get involved in their schemes to control the weather or the land. He'll also face gym leaders, learning new battle strategies along the way.
The special thing about Ash's Hoenn journey fanfic is that it allows for creativity. Writers can give Ash different personality traits or make him face situations that the official story didn't cover. For instance, he could be more confident or more hesitant in certain situations, which would change the whole dynamic of his journey.
In the fanfiction, Ash might encounter unique Pokemon not typically found in the main Kanto storyline. He could also form different relationships with his companions. Maybe he faces a new and powerful villain that isn't in the original.
In some fanfictions, Ash might form an unexpected alliance with a rival. This alliance could be born out of a common goal, like saving a particular region from a new and dangerous threat. They would have to put aside their differences and combine their skills and Pokemon teams to succeed.
One possible fanfiction could be about Ash's adventures in Hoenn during the month of May. Maybe he discovers a new Pokémon species that is only active during this time of the year. He could be traveling with his usual companions and facing challenges specific to the Hoenn region.
In this Hoenn fanfiction, Ash and May could be on a quest to find a special item that is said to have great power. They face various obstacles and meet different characters along the way. Their different personalities - Ash being more impulsive and May being more level - headed - would play a big role in how they overcome these challenges.