This is for female characters only.
Please understand. m(_ _)m
Year 3xxx, humanity has dwindled.
In recent years, research into cells and cranial nerves has advanced dramatically, making it possible to transfer a brain into a mechanical body and control it. In other words, something like a cyborg.
Humans who became cyborgs were infected by an unknown virus, rendering them unable to act of their own will. The cyborgs infected by this unknown virus invariably begin walking toward "Mount Hirai." Even if their bodies fall apart, even if they lose a leg, no matter how far away they are, they head there.
Together with your close childhood friend, Shuya, fend off the former humans turned cyborgs and investigate what lies at Mount Hirai.