Another theme is loyalty and betrayal. Given their positions in the original story, sometimes the fics will play with the idea of Ty Lee being loyal to Azula or having to choose between her loyalty and her own beliefs. There are also fics that focus on the theme of redemption, especially for Azula, with Ty Lee being a factor in that process.
One popular 'azula x ty lee fanfic' is 'The Bond Beyond'. It explores their complex relationship in a very engaging way. The author delves deep into their characters, showing how their different personalities interact. Another great one is 'Hidden Feelings' which focuses on the unspoken emotions between them. It has some really touching moments that make it a great read.
I'm sorry, I don't have specific fanfic to recommend directly. You can try searching on some popular fanfic websites like Archive of Our Own (AO3). They usually have a large collection of fanfictions on various topics including this pairing.
One aspect is character development. Since Azula is a complex character with her own insecurities and power-hungry nature, and Ty Lee is more carefree and acrobatic. You need to show how they interact and influence each other. For example, Ty Lee could bring out a softer side of Azula.
One good Naruto x Ty Lee fanfiction could be 'The Unlikely Bond'. It explores how Naruto, with his determination, and Ty Lee, with her acrobatic skills, form a unique friendship that gradually turns into something more. The story has great character development and interesting interactions between the two.
There's a fanfiction called 'The Unlikely Pair'. In this, Zuko and Ty Lee are brought together by a common goal. It shows how they start to understand and care for each other over time. The author does a wonderful job of creating a believable story arc for them.
The idea of two characters from different backgrounds coming together. Zuko has his complex past as a prince and his journey of redemption, while Ty Lee is a part of the circus troupe. Their different worlds colliding in fanfictions can create unique and engaging stories.
Fanfiction.net is also a good place to look. There are many writers who create stories based on different fandoms. However, the quality can vary. Browse through the Avatar: The Last Airbender section and search for Sokka x Ty Lee specifically. You might need to sift through a few pages to find the ones that interest you.
A 'fish out of water' trope can be applied too. For instance, if Ty Lee visits the Water Tribe with Sokka, she might be out of her element, and Sokka has to help her adjust. This creates situations for character growth and relationship development, and it's a trope that many Sokka x Ty Lee fanfiction writers like to explore.
People like Naruto x Ty Lee fanfictions because it's an interesting crossover of two different universes. Naruto's world is full of ninjas and powerful jutsus, while Ty Lee is from a world of unique fighting styles. Combining them creates new and exciting story possibilities.