One popular storyline could be Ash and a character from the XY series going on an adventure together and slowly realizing their feelings for each other. Maybe they start off as friends, training Pokémon side by side, and as they face challenges, their bond deepens into something more romantic. For example, during a tough Pokémon battle, they rely on each other's skills and that moment of trust makes them see each other in a new light.
The XY series introduced many unique characters and a beautiful region. When paired with Ash in fanfiction, it creates a rich backdrop for a romantic story. The different Pokémon and the cultural aspects of the XY region can be used to enhance the romantic plot. For instance, a story could involve Ash and an XY character sharing a special moment while exploring an ancient XY Pokémon ruin.
One popular storyline is Ash finally achieving his long - dreamed - of victory in the Pokemon League with his Pikachu by his side, facing off against powerful opponents he has met throughout his journey. Another is Ash traveling to a new, mysterious region filled with undiscovered Pokemon species and having adventures there. Also, there are fanfictions where Ash forms an even deeper bond with his other Pokemon, like Charizard, and they go on special quests together.
One possible storyline could be that Ash loses a really important Pokémon battle, like in a championship. He has put so much effort and hope into it, and the loss makes him break down and cry. Maybe he feels like he has let down his Pokémon friends as well.
A possible storyline could be that Ash has a gay friend who is struggling with coming out to his family. Ash, being the kind - hearted person he is, encourages his friend and helps him find the courage to be true to himself. Along the way, they also have Pokémon battles and adventures together.
One interesting storyline could be Ash and Nurse Joy teaming up to rescue a group of Pokémon that have been captured by an evil organization. They use their combined skills and knowledge, with Ash's battle prowess and Nurse Joy's medical expertise to save the day.
One popular story could be 'Ash's Unusual Adventures in the Harem World'. In this, Ash might find himself in a world where he has to deal with multiple female companions in unexpected ways. Another could be 'Ash and the Harem of Pokémon Trainers', where female trainers from different regions are all attracted to Ash's unique charm and skills.
One popular Ash Ketchum and Lillie fanfiction might be those where they go on an adventure together in a region not explored in the main series. They could face new and powerful Pokémon and have to rely on each other's skills to overcome difficulties.
A common plot in Ash Ketchum and Sabrina fanfiction is a journey of discovery. Maybe they both end up in a strange new region and have to figure out how to get back home. Along the way, they learn more about each other and their Pokémon. For example, Sabrina might discover a new side to Ash that she hadn't seen before, like his unwavering determination in the face of difficult situations. This type of plot allows for a lot of character development and exploration.
Another idea is that the discovery of Giovanni as his father makes Ash question his own identity and place in the Pokémon world. He might have to reevaluate his goals and his relationships with other characters. Meanwhile, Giovanni could be faced with the challenge of trying to make amends or trying to bring Ash into his world in a more positive way.
Well, in some Ash Ketchum high school fanfictions, there's a plotline where Ash is given the task of training a group of beginner Pokémon trainers in the school. He has to use his own experiences to teach them, which is not easy as they all have different personalities. Also, there could be a plot where Ash is framed for something he didn't do in the Pokémon - related incidents at school, and he has to prove his innocence while still focusing on his Pokémon training and studies.