Crippling the Age of Reiki from the Start

I thought I was just a time traveler who could modify rules, until I revived the spiritual energy of an entire era. Ancient sects emerged from the ground, old monsters who had slept for ten thousand years awakened one by one, and the way they looked at me was filled with greed and fear! Only then did I realize that the depletion of spiritual energy in this world was no accident, but a terrifying conspiracy sweeping across the three realms. And the [Rule Editor] in my hand is the only key to overturn the chessboard and uncover the ancient black curtain!