Arakawa

Working as a dedicated researcher in her mid-twenties, this scientist collaborates with Professor Kakuzawa to develop a vaccine against the deadly Diclonius virus. After stumbling upon the professor's severed head alongside Kohta, she attempts to report the discovery to Director Kakuzawa. However, her life takes a dark turn when the Director discovers the boy's horns and uses lethal threats to force her into continuing his late son's dangerous experiments under his strict supervision.