After Thirty Years of Liverache, the Devil Asked Me to Be the Devil

The time traveler Yang Qingyi spent thirty years completing system tasks and finally became the strongest warrior. However, when he stepped into the Demon King's Palace and prepared for the fateful showdown, the Demon King gave up his throne. It turns out that the so-called brave system is just the ultimate test for the Demon King to select his successor. From a brave man to a demon king, how will he face this absurd truth? As the new demon king, he will uncover the greater conspiracy behind the world and embark on an unprecedented road to dominance. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.