To write a sakura and hinata fanfic, think about the setting. It could be in their village or on a journey. Develop their relationship gradually. You can include some of their shared interests, such as their love for their friends and their dedication to their skills. Write dialogues that are true to their characters. Sakura might encourage Hinata to be more assertive, and Hinata could teach Sakura some of her more patient ways.
First, you need to understand the characters well. Sakura is strong - willed and Hinata is gentle yet determined. Start with a basic plot idea, like them going on a mission together. Then, build their interactions based on their personalities. For example, Sakura might be more upfront while Hinata is more reserved.