Awoken from a coma, Ayame Itou, a sophomore in high school, found herself on an operating table in an unknown hospital. EKG suction pads, tubes and a drip were running to various meters and monitoring equipment that all led back into her body. It felt like she had just awoken from pre-surgical anesthesia, but for some reason, there were no doctors in sight. As she slid herself off the table, Ayame realized in horror that most of her own memories had vanished.