Chill Out, Kindergarten in Command

Transported three years into an apocalyptic future, Merlin Steer inherits a bizarre kindergarten. Tasked by a mysterious system, he must transform a group of left-behind children—actually S-Class demon gods in disguise—into extraordinary beings to achieve ascension. His biggest hurdle? Those who want to tear down the school to build a restroom. Fending off demolition gangs, vengeful B-Class Thunder God, and relentless Awakener Association, Merlin and his "students" launch a fierce counterattack in the name of "education". Turning Abyss Overlord into janitor, taming Ghost King to deliver meat, and winning global tournament, this kindergarten's influence knows no bounds. In the end, Merlin discovers that the biggest troublemaker is the Void Emperor. With a "Student Code of Conduct" and a lesson in morality, he gets the emperor to don a uniform and sweep the playground.