After one month,
After Leo successfully became the World Leader of the Beastnet, Leo continued to follow his plan of conquering more worlds and overthrowing the authority of the Ancient Gods over those worlds.
For Leo, passing the re-world assessment for Grade 1 worlds was a piece of cake and whereas for the Grade 2 worlds, Leo needed to be careful.
Generally, grade 2 re-world assessments would have been not that hard for Leo; however, the news about Leo overthrowing the authority of the Ancient Gods over the worlds has been spread among the gods.
How could they not act after learning about Leo's actions? They used all the underhanded methods they could think of to kill Leo during the re-world assessments.
What's more, even the Ancient Gods' remnant spirits have descended onto the world to kill Leo.
However, due to the rules set by [Heaven's Voice], they could only use one attack before getting their divine prowess sealed.