Hokage: I became Kaguya's husband

Introduction: Before coming to the world of Naruto, Han Yuya set three rules for himself: [-]: You cannot use powers outside the target world in the target world.Two: You cannot use things that should not appear in this era in the target world, at least not in your own hands.Three: Do not collide prematurely with the child of destiny in the target world.With these three rules, Han Yuya came to the world of Naruto. (Using a more normal logic, connect all the events in the Naruto world and make them look more reasonable. Also to fill in some holes. Of course, I haven’t finished watching Naruto, such as Boruto, so some The plot is different from the original work, please understand!)