I, the Carefree Marquis of Great Xuan, Sword Dao Supreme!

Cast aside as a powerless prince and sent as a hostage to enemy territory, Shangguan Chen's fate takes a dark turn when he bonds with the legendary Evil Sword. Each kill fuels his cultivation, each act of malevolence sharpens his blade—yet reading calms the sword's hunger. From scorned royal pawn to rising sword prodigy, he manipulates the Great Xuan Princess into becoming his maid while she desperately seeks to uncover his secrets. What they don't know: the weakling hostage they dismissed now wields a cultivation speed that defies heaven itself.