I Want to Take the Throne of the Demon King of World Destruction

In the wilderness, demons are rampant. When you see me, you must respect me and say hello, demon king. Am I the demon king? The famous Demon King can destroy a mountain with one punch and suck up an active volcano with one breath, but I'm just an ordinary person? The devil patted me on the shoulder, boy, I'm optimistic about you! Do I have the right to rebut? Believe in yourself, I will reward you with three monsters, and the world will be yours! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.