For Boruto, he could develop from being a bit overconfident to a more mature and reliable ninja. Maybe through his interactions with Sumire, he learns to think more before acting. For Sumire, she could become more assertive. Working with Boruto, she might find the courage to voice her opinions more often and take on more leadership roles.
Well, perhaps in the fanfic, there could be a plot where Boruto gets injured during a battle and Sumire has to take care of him. While taking care of him, she discovers a side of Boruto that he usually doesn't show. And Boruto, in his vulnerable state, starts to see Sumire in a new light. This could lead to a budding romance between them.
Writers often portray Boruto and Sumire's love in fanfiction as a kind of young, innocent love. They might write about how Boruto makes Sumire blush with his cheeky comments, or how Sumire's presence makes Boruto more focused on his tasks. It's all about the small, cute interactions that show the start of their feelings for each other.
Their relationship could develop through shared experiences. For example, if they both get involved in a dangerous fight against a common enemy, they'll start to trust each other more.
One idea could be that they go on a secret mission together. During the mission, they face various challenges that test their skills and teamwork. This could lead to a deeper understanding and bond between them.
Sarada might be initially shocked and sad. She loves both her parents, and the divorce would be a huge blow to her. She could become withdrawn for a while, not wanting to talk to her friends about it.
In fanfiction, Boruto and Sumire could have a very sweet relationship. They might start as friends, gradually realizing their deeper feelings. For example, they could support each other during difficult ninja missions. Boruto's boldness and Sumire's intelligence would make them a great team, and that could be the foundation for their love to grow.
Itachi would probably be very calm and composed. He might see Sarada as a symbol of the new generation of ninjas in the village. He could be gentle with her, perhaps sensing her potential and her desire to grow as a ninja.