I Am the Undertaker of the Unknown

In a small courtyard, a mysterious figure in a black robe spoke to the three identical children before him: “When the first evil spirit in the world fell into the Mother River, the river truly became a ‘mother.’ But her children were nothing like playful kids. They were more like tsunamis sweeping across the land.” The three children seemed not to understand what the mysterious figure meant, so they all asked at once: “What does that mean?” The mysterious figure in black did not answer. Instead, he stared at the three children and said: “Assimilation, Evolution, Self. Those are your names.” “Why?” “To... kill ‘Mother.’”