Naruto Sengoku: My Chakra Industrial Empire

Also known as [Naruto: Complete Industrialization! I bombard all tribes! An engineering student traveled through the Warring States Period of Naruto and became the son of a small ninja clan leader who even the genin looked down upon. The clan is so poor that even its kunai has to be polished repeatedly, its territory is barren, and it is oppressed and extorted by the surrounding wealthy clans every year. Just when the whole clan was panicking, Kithara Che awakened the [Ninjutsu Industrialization System]. While others practiced chakra and set fireballs, he studied chakra steam engines, opened a ninja tool assembly line factory, and mass-produced detonating charms and bursting shurikens; while others relied on blood to pass down ninjutsu, he established a ninjutsu research and development institute, improved low-level ninjutsu, and created chakra cannons and defensive barrier towers. He repaired official roads, opened water canals, built new cities, and used the industrial system to crush the primitive ninja melee. Many years later, when Senju Hashirama looked at the rows of chakra cannons firing on the city wall, he was stunned: "You call this a Ninja Village?"