Ash is a great character to pair Serena with. Their history from previous adventures adds depth to the story. They could have new adventures together in Alola, with Ash showing Serena the ropes of the Alolan Pokemon world and Serena sharing her own unique skills. Another good option is Lillie. Serena and Lillie could bond over their love for Pokemon. They could help each other grow, like Serena teaching Lillie more about Pokemon battles and Lillie introducing Serena to the unique Alolan Pokemon.
Professor Kukui would also be a unique character to pair Serena with. He could serve as a mentor figure to her, guiding her through the study of Alolan Pokemon and their evolution. Serena could also help Professor Kukui with his research in some way, like by observing and documenting the behavior of certain Pokemon. Their relationship could be one of mutual learning and discovery, which would make for an interesting fanfiction storyline.
Gladion could be an interesting character to pair Serena with. He has a mysterious and somewhat edgy personality. Serena could be intrigued by him and they could start off as rivals but then develop a friendship or something more. Their interactions could be filled with tension and mutual respect as they both have their own goals and ways of training Pokemon. And there's also Hau. Hau's laid - back and friendly nature could contrast well with Serena's more determined side. They could have a lot of fun adventures together in Alola.
One great Ash and Serena fanfiction in the Pokemon Sun and Moon setting is 'A New Adventure Together'. It has a really engaging plot where Ash and Serena meet up again in the Alola region and go on a journey to discover new Pokemon. The author does a wonderful job of capturing their characters and the unique charm of the Alola region.
The best aspect is seeing their relationship grow. In the Pokemon Sun and Moon setting, they get to experience new things together. For example, Serena can learn about the unique Alola Pokemon and Ash can show her around. Their interactions are really sweet, like when Ash introduces Serena to his new Alola friends. It adds a new dimension to their relationship.
There are several characters that would work well. Lillie from the Alola region could be a great addition. She has her own unique story and relationship with Pokemon that could contrast with Serena's. Another option is Kiawe. His fiery personality could create some interesting dynamics with Serena. Then there's Gladion, who could bring an element of mystery and a different approach to Pokemon battles. And of course, Professor Oak. His wisdom and knowledge of Pokemon could be a valuable asset in a Serena Pokemon fanfic. He could be the one who sends Serena on a special mission or gives her some crucial information about a rare Pokemon.
Gladion could be a great rival for Serena. He has a very different approach to training and battling compared to her. His edgy style and his strong Pokemon like Silvally would pose a real challenge to Serena.
A great storyline could be Serena using her skills from her previous Pokemon training in new and unexpected ways in the Alola region. Maybe she uses her knowledge of battling to help train local Pokemon that are having trouble evolving or learning new moves. This could also lead to her becoming a sort of mentor to younger trainers in Alola, passing on her wisdom and experiences from her travels in other regions.
One common theme is Serena's journey of self - discovery. In the Pokemon Sun and Moon setting, she might face new challenges that force her to learn more about herself and her capabilities as a trainer. Another theme could be her relationships, whether it's with her Pokemon, her friends in the Alola region, or her old friends from previous regions.
Blair could be a great character to pair with them. Her complex relationship with Serena and her history with Nate add a lot of drama. There could be a love triangle situation or they could all form an unlikely alliance to take on a common enemy.
Another possible main character could be a rival trainer. Maybe someone who has been in the Pokemon world for a long time and initially looks down on Serena. But as Serena progresses, they develop a mutual respect. Also, a Pokemon professor, like Professor Oak, could be in the story. He could provide Serena with valuable knowledge about Pokemon, such as how to catch and train them.
Definitely Ash, as he's the center of Serena's affections. But also, there could be new female characters created specifically for the fanfiction. These new characters might be trainers who are really good at Pokemon battles and catch Ash's attention. Serena would then become jealous of their skills and the attention Ash gives them. Additionally, any of Ash's Pokemon that seem to have a special connection with another character could also be part of the scenario that makes Serena jealous. For example, if Pikachu seems to like a new girl more than Serena, that could be a reason for her jealousy.
Well, perhaps Serena could get involved in a mystery regarding a rare and powerful Pokemon in Sun and Moon. She could team up with some local trainers to solve it. Maybe there's a hidden cave where this Pokemon is rumored to be, and along the way, she discovers new forms of Pokemon she's never seen before. This would add an element of adventure to the fanfiction.