One possibility could be a story where as Uchiha Naruto's younger brother, you have to deal with the expectations of the Uchiha clan. You might struggle to find your own identity as your brother is so well - known. Maybe you have a different jutsu - using style compared to Naruto, for example, specializing in genjutsu rather than his more direct combat - oriented ninjutsu.
Well, it could start with you being a young Uchiha, living in the shadow of your brother Naruto. You might be envious of the attention he gets at first. But as you grow, you discover that your bond with Naruto is more important than fame. Together, you face many challenges, like fighting against powerful enemies who target the Uchiha clan. Your story could be about growing stronger, both in your ninja skills and in your relationship with your brother.
In this fanfiction, perhaps you are the younger brother who is often overshadowed by Naruto. However, you end up having a unique ability that no one in the Uchiha clan has. This ability could be related to some form of space - time ninjutsu. You then use this ability to prove your worth and make a name for yourself, not just as Naruto's brother but as an individual shinobi.