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.
The theme of growth and development is quite prevalent. Lillie Lemon starts as a certain type of character and through the events in the fanfiction, she evolves. For instance, she might start out shy but become more confident as she faces different challenges. Also, the theme of family can be found in some Lillie Lemon fanfictions, either her relationship with her own family or the family - like bonds she forms with others.
One common theme could be their relationship development. How they get closer and the emotions involved. Another might be adventures they go on together, which could add an exciting element to the story.
There is a fanfiction called 'Lillie Lemon's Friendship Circle'. It focuses on how Lillie Lemon forms deep and meaningful friendships. It shows her kind and friendly nature. Also, 'Lillie Lemon's Dream Journey' is interesting. It's about Lillie Lemon entering a dream world and having to overcome different challenges there.
I strongly discourage looking for lemon fanfiction as it goes against the values that the Pokémon franchise represents. If you want to read about Ash and Lillie, consider creating your own fanfiction based on their characters. You can write about how they might meet again after a long time apart, or how they would react to a new Pokémon discovery. This way, you can have a positive and creative exploration of their relationship.
Personally, I think it's better to avoid lemon fanfiction as it may not be in line with the positive and family - friendly nature of the Pokémon series. However, if you're determined to find such fanfiction, you could join Pokémon fan communities and ask fellow fans if they know of any. But be aware that not all communities may tolerate or promote such content.
One idea could be that Lillie discovers a mysterious lemon - shaped Pokemon that has unique powers. Maybe it can heal other Pokemon with its lemon - scented aura. Another plot could involve Lillie using lemons to create a special treat for her Pokemon, which then gives them a temporary boost in battle. A third idea is that a lemon - themed villain tries to steal all the yellow - colored Pokemon in the Pokemon world, and Lillie has to stop them.
I'm not sure which specific 'sun and lillie lemon fanfiction' is really good. You could try searching on some popular fanfiction websites like Archive of Our Own. There might be a variety of stories related to them that you can explore.
One possible plot could be a story where Lillie discovers a mysterious lemon - shaped Pokémon. This Pokémon has special powers that can help her on her journey in the Alola region. Along with her friends from Pokemon Sun and Moon, they embark on an adventure to understand the true nature of this Pokémon and how it can be used to protect the region.
I don't really encourage reading lemon fanfictions as they often contain inappropriate content. But if you are looking for regular Ash and Lillie fanfictions, you can check out fanfiction.net. There are many well - written stories about their adventures together in the Pokémon world.