Naruto: I Borrow from the Future

In Konoha Year 46, on the eve of the Battle of Kannabi Bridge, Uchiha Aoya, who had been a "line-filling baby" for two and a half years, finally received his golden finger. Good news: He could learn ninjutsu, synthesize bloodline limits, and even enhance his talent strength through the system! Bad news: He needed to consume chakra daily to repay his loans. Good news: He could lend money to others! He could enhance others' talent strength, elevate Jonin to Kage level, Kage to Super Kage, and Super Kage to Six Paths, reaping rich rewards in the process. "But what if someone doesn't trust me and refuses my help?" Then he could only enhance the strength of the ninja world! He helped the fleeing Orochimaru escape pursuit, helped the nearly wiped-out Kumogakure avert crisis, helped the prematurely exposed Akatsuki fight against the Five Great Nations, helped Obito survive his exposed identity, and helped Black Zetsu complete the Eye of the Moon Plan after his conspiracy was leaked… [Future Loan Service is now online, dedicated to providing assistance to every ninja trapped in dire straits.] As for where those dire straits came from, don't ask. ...Years later, Madara Uchiha returned from the Pure Land and, looking at the ninja world where Kage-level ninjas were practically worthless and Super Kage were everywhere, wondered if he had been dead for too long. (PS: This book leans towards an invincible protagonist style.)