She, a female mercenary in the 21st century, has a beautiful appearance, enchanting figure, and cruel means. She took human life while chatting and laughing, but was killed by her senior sister of the same school. She returned to her position and found out that she was already in another world. He, the prince of Xixia, is known as the waste prince, and there is also a waste princess who is as famous as him. Is it a waste? Or a genius? Waste against waste, Yaorao vs Yaorao, who wins? Who loses?