Introduction to the Four Princess of the Cold-Blooded Killer: They created an evil organization for revenge, a gathering place for killers who both black and white terror. The four MMs have different personalities, but they are friends of life and death. Mysterious cold-blooded as her, charming and bloodthirsty as her, lively and bloody as her, cute and cruel as her. They created miracles in four years for revenge. The world's largest mysterious organization, the world's number one company, the world's most powerful consortium, the cold-blooded killer who is known to everyone in the world, the royal princess of three world powers... Four years later, they came back, but for revenge. They once vowed: Those who have hurt them have no desire to live!