"Wait a second," Chen Yu squinted his eyes and interrupted, "There are a few things I don't understand. What is the connection between the people who just died in the villa area and the 'evil beings'?"
"'Evil beings' gradually turn into beasts over time," the bearded man explained rapidly, "but human brain tissue contains rich native 'prion proteins' and other special substances. After 'evil beings' feed on it, they temporarily 'devolve' and maintain a human form. Thus, by retaining my human appearance, they seem normal and won't be exposed."
"I see..." Chen Yu thought of his sister, "What happens if they don't consume human brain tissue continuously?"
"The turning into beasts speeds up. Eventually, they lose all sense and have only the instinct to devour humans left. They won't 'devolve' back."
The bearded man paused briefly, then added, "Those people were killed by me. They had it coming. I only took their brain tissue, for my sister to eat."
"Isn't your sister a vegetarian?"
