The year is 2020. A young woman named Shiori Genpo, a descendent of the Phantomhive noble family, runs the prosperous Funtom Company. Since only males are allowed to lead the family, Shiori disguises herself as a man name Kiyoharu, and works to solve difficult cases tasked by the Queen. Sebastian, a demon, watches over and protects her as her butler in exchange for consuming her soul after she fulfils her revenge.
