Abyss Cleansing

Who is the red figure in the dream? Why do I dream about it for seven consecutive days in July? Why can there be sounds of "sizzling", "sizzling" and "sizzling" outside the door of my room where no one is around in the middle of the night? There is a person struggling in the river under the bridge, but why do the pedestrians on the bridge turn a blind eye? What other weird people died, and why did there appear a card next to their bodies that said, "Purge"? And a sudden letter from my parents! What is the reason for all this?