Waste Material Against Heaven: the Emperor Only Dotes on His Concubine

She is a modern ace agent who makes elixirs and cultivates telepathy, tortures scumbag men, rides on concubine girls, and fights demon gods to become the world's empress; he is the most noble king of the Purple Hero Continent, looking down upon no one in the world. When she meets him, will they join forces or fall in love and kill each other? The cold emperor VS the arrogant empress, the powerful attack is coming!