"Becoming the Mastermind Behind the Scenes, Starting with Akatsuki"
Here is the synopsis:
Transported into Akatsuki during Yahiko's era, Bai Ye had originally planned to flee early and avoid becoming a sacrifice in Pain's birth. But he unexpectedly obtained a system bound to Akatsuki. As long as he helped Akatsuki grow stronger, he could receive system rewards.
To prevent Akatsuki from being wiped out, Bai Ye had no choice but to guide its development and set it on an entirely different path.
When Hanzo and Danzo joined forces to crush Akatsuki, they were shocked to discover that Akatsuki truly possessed the strength to overthrow Amegakure.
Many years later, the Five Great Nations suddenly realized that Akatsuki had quietly overturned the entire Ninja World and become its uncrowned king.
None of it would have been possible without the man hidden deep within Akatsuki.