Definitely include Team Skull members like Guzma. They can be the antagonists, causing trouble for Lillie and the main character as they go about their adventures. Another good character to include is Acerola. She has a connection to the Ghost - type Pokemon and her spooky yet friendly nature can bring a different flavor to the fan fiction. Also, Lusamine, Lillie's mother, can be included to explore their family relationships further and add some depth to Lillie's character development.
One possible fanfiction could be about Sun and Lillie going on an adventure together in the Alola region. They might discover a new and rare Pokemon that only appears during a certain lunar phase. Sun could use his skills as a trainer to protect Lillie from any potential danger, and in the process, their relationship could grow deeper.
I'm not sure about a specific 'pokemon lillie x sun fanfic' off the top of my head. But you can try looking on fanfiction.net. There are tons of fanfics there, and you can search for ones related to this pairing. You might find some real gems that explore their relationship in unique ways, like having them face a new, never - before - seen Pokemon threat together.
Some plot ideas for this fan fiction could start with Lillie finding an ancient artifact that has the power to control certain Legendary Pokemon. This sets off a chain of events where she has to protect it from evil organizations. Another idea is that Lillie's Pokemon evolves in a completely unexpected way, and this new form has abilities that no one has ever seen before. This leads to her being in the spotlight as people try to figure out what's going on. Additionally, a plot where Lillie and the main character from Pokemon Sun are sent back in time to the origin of the Alola region and have to witness and even influence the events that shaped the Alola we know today would be very engaging.
One popular Pokemon Lillie x Sun fanfiction might be 'A Journey Together'. It often focuses on their adventures across the Alola region, with a lot of character development for both Lillie and Sun. They face various challenges and their relationship deepens as they help each other out.
Adventure is a common theme. Since they are in the Pokemon world, they often go on journeys together, exploring new areas and encountering different Pokemon. Another theme is friendship evolving into something more. Their relationship starts as comrades and gradually develops into a deeper emotional connection.
A simple plot could be that Sun and Lillie are on a quest to find a special Z - Crystal. They face many obstacles along the way, such as difficult terrain and other trainers. Their relationship develops as they support each other through these challenges.
A fanfiction might focus on Lillie's relationship with other characters in Pokemon Sun. For example, how she interacts with the protagonist and how their friendship evolves over time. They could go on adventures together, and Lillie could learn important life lessons from these experiences. Also, her family background could be explored more deeply in the fanfiction, which could add more layers to her character.
Fanfiction.net is another place to search. There are tons of Pokemon - related fanfictions on this site as well. However, the interface might be a bit more cluttered compared to AO3. But if you dig around a bit, you should be able to find some good Lillie x Sun fanfictions. You can also check the Pokemon section specifically and then narrow down your search within that.
Some of the best ones are those that blend humor and adventure. Picture a story where Lillie and the protagonist get into all sorts of comical situations while exploring the Pokemon Sun region. Maybe they accidentally swap Pokemon or get lost in a Pokemon - made maze. These stories not only make you laugh but also show the deepening friendship or relationship between them as they figure out how to get out of these sticky situations.