The Thirteenth Age of the Human World

On the day when Xu Zhao was sixteen years old, there was only one sentence on Xu Zhao's fate monument: This person has been dead for three thousand years. In this world, practitioners can borrow power from their future selves, but they must repay it with another possible life. Xu Zhao, who had no future, got a wordless monument that could contain the abandoned future of all sentient beings. Every time he borrows strength, he inherits a stranger's memory, a regret, and an unfulfilled promise. When he discovers that the world under his feet is already the thirteenth and final era, he must answer: If saving one world requires sacrificing twelve others, who has the qualifications to decide who should live?