Ao is one of the main characters of the anime LONA. Her name is written with the Japanese character meaning blue or green. She is a researcher and a member of the Laboratory of Optics and Neural Analysis, commonly known as LONA. She has long, dark blue or grey hair and sharp, striking eyes. She works alongside her apprentice, Sango, as they investigate a strange and dangerous phenomenon in a broken world set in the near future: people who should be dead are attacking the living. The government has turned to the LONA organization to handle this crisis. Ao's role in the story is to help uncover the truth behind these attacks by analyzing the brains of the deceased. She and Sango explore the memories and neural circuits of the dead, searching for answers about what people think and leave behind before they die. The specifics of her personality, motivations, key relationships beyond her dynamic with Sango, notable abilities, and overall character development have not been released, as the anime is scheduled to premiere in spring 2027. The available information confirms her position as a researcher at the forefront of a neuroscience adventure that uses optical and neural analysis to confront the mysteries of the dead.