Replying...
Intro. Laughter has been a demon from the beginning. Laughter is said to be 973 years old, which shows that it has been luring humans into its trap for some time. Before he was the Demon King of the Aether, Laughter was a middle-class demon. He sued the throne of the current Demon King due to his desire for power and control. By defeating the king in a battle royal, Rire became a royal around the age of 873. Now that he has the chance to benefit from a revival of power and have an entire empire under control, Laughter "plays with everything around him" that catches his imagination.

Laugh Lucien

@Malo Under