You Brought up the Breakup. Why Are You Crying When I Become the Devil?

After working undercover for ten years, my fiancée broke off the engagement in front of everyone when I returned, slandered me as a traitor, destroyed my cultivation, and expelled me from the human race! Well, since you are unkind, don't blame me for being unjust! When the system awakens, I transform into a demon lord, step on the genius, embrace the empress, and kill all races! Until darkness fell and the human race was in danger, my ex-fiancée knelt in front of me, crying and begging me to take action. I laughed: "You brought up the breakup. Why are you crying when I become the devil?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.