Clean up This Ridiculous World

He was reincarnated into a different world and became a brave man. For the sake of world peace, he went through all kinds of hardships to defeat the devil. After defeating the Demon King, he was stabbed again by the person he trusted most in the past, and was tortured to death by the sickly princess. Will the brave man who saved the world die in such a miserable way? No! After obtaining endless dark power from the goddess and being reborn, he is bound to kill everyone in this world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.