The world has given up on me, so let's destroy the world. However, what is left of the destroyed world?
The dark demon destroyed the world, but when it reached the center of the world, there was only loneliness and despair. The devil couldn't bear this result, and finally put loneliness and despair into his body. As a result, demons have become the object of disgust for everyone in the world.
Because humans are afraid of loneliness and the unfathomable power of the devil.