Brief introduction of the four cold-blooded killers and four princesses: They created a demon organization for revenge, a gathering place for killers that frighten both black and white. The four MMs have different personalities, but they are friends between life and death. Mysterious and cold-blooded like her, charming and bloodthirsty like her , Lively and bloody like her, cute and ruthless like her. For revenge, they created miracles in four years. The world's largest mysterious organization, the world's number one company, and the world's most powerful consortium are known to everyone in the world The cold-blooded killers of the world, the royal princesses of the three world powers...! Four years later, they came back, but it was for revenge. They swore that those who had hurt them would die of pain!