The Demon King of Questions came from another world.

He was brought to another dimension by a space ability user during a competition, and unfortunately, he encountered a space turbulence and crossed the universe to come to reality. After living for four years, he was brought to the Sandbox Court by a letter. In the Sandbox Court, he had the gift of causing everything to fall into darkness and destruction. After more than a thousand years, he became the Dark Night Demon King. What would happen if a three-digit Demon King met three problematic children?