Well, it could be about Naruto having some sort of special connection or adventure related to Beyaneta. Maybe Naruto discovers he has a long - lost brotherly bond with Beyaneta and they team up to face a common enemy in a world that combines elements of the Naruto universe and Beyaneta's world.
In this fanfiction, the story might start with Naruto being unaware of his relation to Beyaneta. Then, through a series of events, like a strange encounter or a prophecy, he finds out. Once he does, he has to deal with the implications. He may have to face the fact that his family has a whole other side to it. And together with Beyaneta, they might explore their family history while also fighting off those who oppose their new - found alliance.