In this fanfiction, I think his Pokémon, especially Pikachu, would definitely be by his side in the hospital. Also, his other friends from his journey like May or Dawn might come to see him and bring him some get - well - soon gifts.
His friends like Misty and Brock would probably visit him.
Well, it's very likely that Professor Oak would visit Ash in the hospital. He has always been like a mentor to Ash. And maybe some of the Gym Leaders that Ash has befriended over the years would also drop by. They might share their own experiences of getting injured and recovering to give Ash some hope and motivation to get better.
One possible fanfiction could be that Ash gets injured during a Pokemon battle and is rushed to the hospital. Serena, being worried sick, stays by his side the whole time. She might bring him his favorite Pokemon treats to cheer him up while he recovers.
In the 'pokemon ash in the hospital fanfiction', it could be that Ash got poisoned during an encounter with a new and dangerous Pokémon. While in the hospital, he starts to have strange dreams about a powerful Pokémon he has never seen before. His friends come to visit him, like Misty and Brock. Misty might scold him a bit for being too reckless but also show her concern. Brock could be using his knowledge of herbs to see if there are any that can help Ash's recovery. And all the while, Ash is thinking about getting back on his journey as soon as possible.
Ash could be a Pokémon trainer with a different starting point in this fanfiction. Born in 1987, by 1997 he might have already made a name for himself in local Pokémon battles. He could have a team of Pokémon that he rescued from difficult situations, like a Charmander that was abandoned by its trainer. His story could revolve around giving these Pokémon a second chance and proving that Pokémon don't need to be 'perfect' to be strong.
Pikachu is a very likely candidate. It's Ash's most iconic Pokemon and has a deep bond with him. Whenever Ash is in trouble, Pikachu often steps up to protect him.
In a fanfiction about Ash born in 1987 and his situation in 1997, we could see an alternate story where Ash is not the typical rookie trainer. Since he's a bit older than in the original, he might be more knowledgeable about Pokémon lore. He could be on a quest to uncover some ancient Pokémon secrets in 1997. He might travel to different regions, not just for battles but also to study old Pokémon texts and artifacts, and along the way, form an unusual team of Pokémon that are attracted to his in - depth knowledge.
One popular aspect of Alola fanfiction with Ash could be his growth as a trainer. In the Alola region, Ash had unique experiences. Fanfiction might explore how he further developed his skills, formed new bonds with Pokemon, and interacted with the local culture. For example, his relationship with Pikachu might be delved into deeper, showing how they overcame new challenges together in the Alola setting.
Queen Ilene could be a powerful ruler of a fictional kingdom. She might be known for her intelligence and strong leadership. Ash, on the other hand, could be a character with special abilities, perhaps a wizard or a very skilled warrior.
One popular type of Pokemon Ash and Pikachu fanfiction might be adventure - based. For example, Ash and Pikachu could embark on a journey to a new and mysterious region filled with undiscovered Pokemon species. They might face challenges like difficult terrains and powerful, previously - unseen Pokemon. In this fanfiction, Pikachu's electric powers could be enhanced in some unique way, and Ash would have to strategize differently to overcome the obstacles.
Professor Oak could also come to visit Ash. He might bring some rare Pokémon medicines from his lab. And of course, Ash's mom would be there. She would cook all of Ash's favorite foods and make sure he takes his medicine on time and gets enough rest.
In some fanfictions, Ash can touch Pokémon to show a deeper bond. It might be a way for the author to create more emotional and physical interactions between Ash and his Pokémon pals, different from the normal anime where physical contact like hugs is not as common.