Transported to a fantasy realm following a tragic school trip accident, Odamori Tooru—a friendless high school student—discovers an extraordinary cheat class: the 『Slavemancer』. This rare occupation grants him the power to control the minds of those around him, which he wastes no time exploiting to dominate unsuspecting women. His dark path takes an unexpected turn when Himeno Kirika, a former classmate who also transmigrated to this world, confronts him as a righteous 『Princess Knight』. Despite her opposition, Tooru sets his ambitions higher—determined to enslave every woman he encounters: former classmates, adventurers, elves, demons, and even royalty itself.