The Cruel Demon King Is Unexpectedly Gentle

He is obviously the Demon King and has the power to destroy the world, but he always works hard for the peace of this world, so much so that he is tired of this war era and chooses to be reincarnated ten thousand years later. However, the descendants ten thousand years later do not seem to recognize him at all, and even the name of the Demon King has been tampered with to someone else. Let's see how the cruel Demon King carves his own path of dominance in the new era. All unreasonable things that stand in front of you will be destroyed by me. All you need to do is follow me. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.