He must make thorough preparations to drag the book of life and death into the abyss of heavenly will, while amassing his power to the peak. The underworld, wary of his power, has been waiting for the book's power to recover to confidently annihilate him.
It is due to this wariness that the situation has been prolonged to its current state. Yet today, people from the underworld have come. Their arrival has thrown his plans into disarray, and though he has infiltrated the heavenly will, he hasn't achieved complete corrosion of it. Now, he is not prepared to wait any longer. He wants to accomplish everything in one stroke by directly slaying all the rulers of the underworld.
Once the rulers of the underworld are dead, the power of the book of life and death will inevitably be shaken. At that time, he will be able to devour the sky in one go!
This is his scheme!
