Their relationship can be developed through shared experiences. For example, when they encounter a difficult Pokémon battle together, Pikachu can protect Lillie, and Lillie can in turn use her skills to support Pikachu. This mutual reliance will strengthen their bond.
A plot could revolve around Pikachu getting sick and Lillie using her knowledge of Pokémon care to nurse it back to health. During this time, they develop a deep friendship. Then, they notice some strange behavior in other Pokémon around them. Together, they start to investigate and find out that there is a pollution source affecting the Pokémon. Lillie and Pikachu then try to find a way to clean up the pollution and restore the health of the Pokémon in the area. This would show their caring and adventurous sides.
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.
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 common theme is adventure. They often go on Pokemon - related adventures together. Another one is friendship turning into love, as they start as friends and then develop deeper feelings.
Some pokemon - centered forums might also be a good place to look for 'pokemon ash x lillie fanfic'. Fans often share their stories or recommend good ones on these forums. Just search around for topics related to pokemon fanfiction, and you might find what you're looking for.
A really interesting 'pokemon ash x lillie fanfic' might be set in an alternate universe where Ash and Lillie are part of a secret pokemon organization. They have to work together to uncover a conspiracy, and during this time, their relationship blossoms from colleagues to something more. They rely on each other's skills, Ash with his battling prowess and Lillie with her understanding of pokemon behavior, and their adventures are filled with suspense and romance.
One possible plot could be that Mimikyu is jealous of Pikachu's popularity. However, instead of becoming enemies, they end up in a situation where they have to rely on each other. For example, they get lost in a strange part of the Pokemon world. Through this experience, Mimikyu realizes that popularity isn't everything and Pikachu learns to see Mimikyu's true value.
A common theme is friendship. Pikachu and Buneary are often shown as good friends, relying on each other. Another theme could be adventure, as they explore the Pokemon world together.
One great 'Pokemon Lillie Fanfic' is 'A Journey with Lillie' which beautifully explores her character growth. It shows her relationship with the Pokemon in a very heartwarming way.