In the fanfic, their relationship could grow as they learn about each other's pasts. Lillie could share her story of how she came to be involved with Pokémon, and Pikachu could, in its own way, show Lillie its memories of adventures with its trainer. As they open up to each other, they become closer. Also, small acts of kindness like Pikachu sharing its favorite berries with Lillie or Lillie making a special place for Pikachu to rest can contribute to a deeper relationship.
One way to develop their relationship is through a series of challenges. Let's say there is a mysterious maze in the Pokémon world. Lillie and Pikachu enter it together. Inside, they have to rely on each other's unique abilities to find their way out. Pikachu can use its electric powers to light up dark areas and shock any threats, while Lillie can use her intelligence to solve puzzles. Every time they overcome an obstacle in the maze, their trust in each other grows. After they finally escape the maze, their relationship is much stronger than before. This is just one example of how they can grow closer in a fanfic.
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.
In fanfiction, their relationship could be developed through moments of vulnerability. For instance, if Lillie has a nightmare about her past experiences with the Ultra Beasts, Gladion can be there to comfort her. This would deepen their bond. Also, they could train their Pokemon together. Gladion's more aggressive style and Lillie's gentle approach could complement each other, leading to a stronger relationship as they learn from one another.
Many writers portray their relationship as an unlikely friendship. Given their different natures, it makes for an interesting dynamic. Mewtwo is a product of scientific experimentation, while Pikachu is a natural - born Pokemon. Their relationship is often shown as a way for Mewtwo to discover the simple pleasures of the Pokemon world through Pikachu, and for Pikachu to understand the deeper, more complex emotions that Mewtwo experiences.
Lillie could start off as being shy around lemons (maybe she had a bad experience with a sour lemon as a child) but then learn to appreciate them as she discovers their importance in the Pokemon world. For example, she could learn that a certain lemon - related item can boost her Pokemon's speed. This would show her growth in being open - minded and resourceful.
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.
One way to develop her character is through her relationships. Besides Ash, she could have a special friendship with other Pokémon in Ash's team. Maybe she is like a big sister to the younger Pokémon, teaching them things and protecting them. This would show her nurturing side and develop her character further.
They could also have common goals. Let's say they both want to build a really cool treehouse in a particular forest area. They would need to gather materials, plan the structure, and work together. During this process, they'll learn more about each other's strengths and weaknesses. Emolga could use its flying ability to carry light materials to the treehouse site, while Pikachu could use its small size to fit into tight spaces to set up the interior. This kind of cooperation will deepen their bond.
Their relationship can be developed through shared experiences. For instance, when they fight side by side against a common enemy. This would create a bond of trust and mutual respect between them.
Perhaps a near - death experience where Odd saves Aelita or vice versa. This would create a strong emotional connection between them. After that, they would be more protective of each other and their relationship would grow into a more intimate friendship or even something more romantic over time.
To develop their relationship, you could show them in normal, everyday situations. Like them having coffee together and just talking about their dreams and fears. This would humanize them and make their relationship more relatable. Also, having them save each other's lives in different scenarios would strengthen their bond. Maybe Spiderman saves Gwen from a falling building one time, and then Gwen saves him from a dangerous chemical spill another time. And then there could be moments of jealousy when another character shows interest in either of them, which would make them realize their true feelings for each other.