Flyer from the Demon Control Center:
Dear monsters, how are you?
It doesn't matter if it's not good, Yuyao Institute is here to serve you wholeheartedly.
If you're being hunted and at the end of your rope, that's okay! The Demon Control Sanctuary protects you!
If your whole family is killed and you can't take revenge, that's okay! The Demon Control Institute will help you take revenge, and the strength of the four demon kings is guaranteed!
If you have something stuck that you can't figure out, that's okay! Monster Control will help you solve this problem. We have the largest monster think tank in the world!
But the premise is that you are a kind monster, and in exchange, you will work for us at the Monster Control Center for free for 300 years.
As the uncrowned king who commands all demons and the director of the Demon Control Center, Su Shuaize vows to protect the weak demons around him and eliminate injustice in the world in this life.