Well, in the fanfiction, there could be a mystery in the hospital. Ash and Serena might discover a hidden room where an old Pokemon trainer is being held captive. They then team up to rescue the trainer while also dealing with their own health issues.
Ash and Serena might meet some new and strange Pokemon in the hospital's garden. These Pokemon could have unique abilities that help in their recovery. For example, a small, furry Pokemon that can emit a soothing glow.
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.
They might encounter advanced Pokémon species that don't exist in their time. For example, new evolutions or completely new types of Pokémon. This could lead to new adventures and challenges as they try to understand and befriend these Pokémon.
In this kind of fanfiction, they might have new adventures. They could explore the unique Alola region together, encounter new Pokemon species, and bond even more deeply. Maybe Serena would learn new battle strategies from Ash, and they would participate in local Alola Pokemon contests and battles side by side.
Well, after the kiss, perhaps they decide to participate in Pokemon contests together. Serena's expertise in contests and Ash's battle skills could combine in unique ways. They might also meet new friends and rivals along the way, all while their relationship deepens and they face challenges as a couple.
It could be that the pink Butterfree is actually a transformed Pokémon. In the fanfiction, it could be a Pokémon that was experimented on by an evil scientist and turned into this pink Butterfree. Ash and Serena have to figure out how to turn it back to its original form. Along the way, they discover the scientist's lair and have to battle his other creations. This would be an exciting adventure full of mystery and action.
In the fanfiction, they might have deep conversations about their Pokémon journeys. They could share stories of their toughest battles and how they overcame challenges, strengthening their bond as friends.
They could have all kinds of adventures. Maybe they discover a rare Pokémon in a hidden forest. They might also meet some interesting characters along the way who teach them new battle strategies or share old Pokémon legends.
In this fanfiction situation, they could end up using their knowledge of the future to help people in the past. For example, Ash could use his Pokémon training skills to solve some problems that people in the past were having with wild Pokémon. Serena could perhaps use her cooking skills to introduce new recipes. And together, they would be constantly looking for clues or a magical item that could send them back to their time.
Well, on their third date, they might go to a beautiful garden. Ash could pick a flower for Serena, and they would sit on a bench, just talking about their dreams. Maybe Serena would share her future plans in Pokémon coordinating, and Ash would listen intently, his eyes full of admiration.
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.