Starting from Saving the Whirlpool, I Am the First Emperor of the Ninja World

The male protagonist travels through the world of Naruto, saves some members of the Uzumaki clan in the crisis of the Uzumaki Kingdom's destruction, joins Konoha, and gradually wins over Hinata, Uchiha and other ninjas in a series of political struggles, and in the process, forces Danzo Shimura away. Under the oppression of the Fire Country daimyo with the assistance of Danzo Shimura, he rebelled in anger, overthrew the one-country-one-village system, established an emperor system with unified military and political affairs, and began his grand dream of unifying the ninja world.