Naruto: Zhuqi Tianxia

A hundred years after the founding of the Fire Nation, ninjas sit high in the clouds. They hold power, accept tasks, and influence wars, but they do not pay taxes and are not subject to local jurisdiction. Until a young tax collector came to the border town. Akizuki Keimasa (Hide Hatake) has no blood lineage limit, no chakra talent, and no famous background. He only has one account book. Others use kunai to change the battlefield, he uses numbers to track down the blame; others use ninjutsu to solve problems, but he uses the system to force ninjas to bow their heads. When everyone thought that this young official was just an ignorant scholar, he had already started to do something that no one dared to do - Redefining the relationship between ninja and country. From a small tax collector to a reformer who controls the lifeblood of the world. He wants to prove: Knives can belong to individuals. But power must belong to the world.