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.
A plot could revolve around a time - travel scenario. Boruto and Sumire are sent back in time and have to find a way to get back to their own time. Along the way, they learn about the history of their village and how it affects their present, and their relationship grows stronger as they rely on each other to survive.
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.
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.
One idea could be an OC who is a foreign exchange student from a far - off land in the Boruto universe. They bring unique jutsu or cultural elements that no one in Konoha has seen before. This could lead to interesting interactions with the main characters as they learn from each other.
One idea could be that the reincarnated character has memories of the future of the Boruto world. So they try to prevent certain disasters from happening, like the fall of Konoha. Another could be that they use their modern - day knowledge to revolutionize the ninja technology in the Boruto universe.
One idea could be a crossover with Naruto's past characters. For example, Boruto somehow travels back in time and teams up with a young Naruto to face a new threat that endangers both their timelines. This would create an interesting dynamic between the two generations.
Well, a plot could be about Naruto and Sakura having to train Boruto in a special way that combines their unique abilities. Naruto could teach Boruto about his Rasengan and Sakura about chakra control and medical ninjutsu. This would create a story about Boruto's journey to master these combined skills and how it shapes his character in the Boruto series.
One idea could be Boruto getting transported back in time and meeting a young Naruto. He could then help Naruto avoid some of the early hardships he faced, but also realizes that those hardships made Naruto who he is. Another could be Naruto and Boruto switching bodies for a day, which would lead to humorous situations as they try to navigate each other's lives. A third idea might be that Boruto discovers a hidden power within himself by training with Naruto in a special dimension where time moves differently.
Maybe in the fanfiction, Boruto discovers a secret about Hanabi's past that she has been hiding from everyone. This secret could be related to her training or a special power she has. Boruto then helps her face this secret and together they use it to protect the village from a new threat. It could show their growth as characters and how they support each other.
Maybe there's a prophecy that only Naruto and Boruto together can fulfill. They have to embark on a journey to find a set of ancient artifacts. Along the journey, they face many trials and temptations. Their different personalities sometimes clash, but they learn to work together. For example, Naruto's impulsiveness might get them into trouble, but Boruto's quick thinking gets them out. This back - and - forth helps build their bond.
One idea could be a story where Boruto and Himawari go on a secret adventure together outside of the village. They discover a hidden place full of strange creatures and have to work together to get back home safely.