Another theme is mutual respect. They both have unique skills. Gaara with his sand control and Lee with his taijutsu. Fanfics often show how they come to respect each other's abilities. In some, they even learn from each other, like Lee teaching Gaara about the value of hard work and Gaara showing Lee how to be more in tune with his inner self.
Friendship - turned - love is also a common theme. The stories may start with them as acquaintances or even rivals, and then gradually develop into a more romantic relationship. This shows the growth of their bond over time. Also, themes of acceptance are present. Since both characters have their own insecurities and past traumas, they learn to accept each other completely in these fanfics.
The theme of redemption also appears sometimes. Gaara's past actions and his journey to redemption can be intertwined with his relationship with Lee. Lee's positive influence on Gaara and vice versa, in terms of helping each other grow and become better shinobi, is a common thread in these fanfictions.
Another theme is personal growth. Lee can grow in his understanding of those with a darker past like Gaara, and Gaara can learn to open up more because of Lee's positive influence. In many 'lee x gaara fanfic', this mutual growth is beautifully depicted through various plotlines, like when they face a common enemy and have to rely on each other not just physically but also emotionally, which leads to them becoming better versions of themselves.
Well, in 'lee x gaara mpreg fanfiction', often you'll see themes of love and sacrifice. Lee and Gaara may have to sacrifice some of their own goals or reputations to protect their relationship and the unborn. Also, the theme of family and new beginnings can be present, as they are about to start a family in an unexpected way.
One common theme could be the exploration of their different personalities. Gaara is often seen as the brooding, powerful one while Lee is the energetic and determined. Their contrast can create interesting relationship dynamics.
Overcoming past traumas is also a theme. Gaara has his past with being a Jinchuriki and Rock Lee has his insecurities about not being able to use ninjutsu. In fanfiction, they often help each other heal and grow from these past issues. And of course, the theme of loyalty. They show loyalty to each other in different situations which deepens their connection.
Friendship is a very common theme. Given their initial meeting in the Naruto series and how Naruto was able to reach out to Gaara, fanfics often expand on this friendship. Another common theme is mutual understanding. Since they both had difficult pasts, understanding each other's pain and growth is often explored.
One common theme is friendship. Given their initial differences and how they come from rival villages, fanfics often explore how they can form a bond of friendship. Another theme is understanding. They both have complex pasts and personalities, so understanding each other's motives and pain is often explored.
A prevalent theme is understanding. Given their different backgrounds and personalities, a lot of fanfics focus on how they come to understand each other. For example, Sakura may understand Gaara's loneliness due to her own experiences of feeling alone at times. Also, the theme of growth is common. As they interact, both Gaara and Sakura grow as characters, becoming more empathetic and stronger in different ways.
Redemption is also a theme that can be found. Maybe Deidara, who has done some bad things in the Naruto universe, can find a form of redemption through his relationship with Gaara. And for Gaara, it could be about helping someone who seems lost. It's often about two broken souls finding solace in each other. The fics may also deal with the power dynamics between them, considering their different abilities and standings in their respective villages.