I Agreed to Be a Hostage, Why Did You Become an Immortal?

Li Xian transmigrates into a fantasy world as the notorious black sheep of a Duke's mansion—poisoned, talentless, and shipped off as a hostage to the imperial city. Just when things couldn't get worse, he awakens a 'Negative Emotion System' that rewards him for making others miserable. From stealing swords with legendary techniques to hiring 'guards' by bankrupting his enemies, Li Xian transforms from disposable pawn to the realm's most outrageous cultivator. His fiancée is horrified. His brothers are furious. The empire is in chaos. And Li Xian? He's collecting negative emotions like currency…