I Used a Loan to Buy the Ninja World, from Debt to the Kingdom of God

"System" and "Financial Brain Hole" traveled to Konoha Village and became an ordinary genin, Sakamoto Linfeng awakened the financial system. Others use kunai to kill people, he uses interest to kill people. While others save chakra, he saves his credit rating. When someone else was the Hokage, he asked the Hokage to work for him. Many years later, the five major ninja villages held a joint meeting. The theme was not war, but - the first bank of the ninja world, will it raise or lower interest rates today? When finance came to the ninja world, all kage levels became retail investors.