One story could be when Naruto found a beautiful flower on his way to the academy and he gave it to Sakura. Sakura was initially a bit shy but then she smiled and thanked him. It was a small moment but showed their innocent friendship.
One of the most interesting aspects of Sasuke and Sakura's childhood friendship in fanfiction is how it can be developed in different ways. Some fanfictions might focus on the innocent moments they shared, like when they first met at the ninja academy. For example, they could have bonded over a shared love for a particular jutsu that they saw a teacher perform. This simple connection could then grow over time as they train together and face challenges side by side.
Their friendship might change as they got older in that they would rely on each other more in different ways. For example, Sakura, as she grew in her medical ninjutsu skills, would be there to patch Naruto up after tough battles. Naruto, on the other hand, would be a source of emotional support for Sakura when she faced difficult decisions in her life. Their childhood bond would evolve into a more mature relationship.
For Gaara, his friendship with Sakura could make him more open and trusting. Instead of being feared, he would start to show his softer side. Sakura, meanwhile, would become more empathetic towards those with troubled pasts. Her experience with Gaara would teach her that there's more to a person than what meets the eye.
Protection is also a theme. Sasuke, even as a child, might have a sense of protecting Sakura from bullies or other threats. In fanfiction, this can be exaggerated and shown in different dangerous situations. And there's the theme of misunderstanding. Their different personalities as children could lead to misunderstandings. For example, Sasuke's quietness might be misinterpreted by Sakura as disinterest, when in fact he cares in his own way.
One possibility is that they could have supported each other during tough times. Gaara, with his lonely childhood, might have found comfort in Sakura's kind heart. Sakura, in turn, could have learned about Gaara's unique abilities and the hardships he faced in the Hidden Sand Village. They might have shared secrets under a big tree, away from the prying eyes of others.
In many fanfictions, their childhood friendship is the foundation. It makes Hinata understand Naruto on a deeper level. For example, she knows his dreams and his pain from when they were young. This understanding helps her support him better as they grow older and their relationship develops.
One way is to show them sharing simple pleasures like climbing trees together. Sasuke could be the brave one helping Sakura reach the highest branches. This would symbolize his role as her protector in childhood.
If Naruto and Sakura were twins in a fanfiction, their childhood would be full of shared experiences. They would likely play pranks on the villagers together, like Naruto does on his own in the original story. They would also train together, with Sakura perhaps being a bit more studious and Naruto more impulsive in their training sessions. Their home life would be different too. They could support each other through the hardships of being orphans and facing the prejudice in the village.