H STATE SURVIVOR / エッチステートサバイバー

13 years ago a small planet almost collided with the Earth.
Falling, the planet broke up, and countless number of fragments fell from the sky.
This event forever changed the basis of human culture.
Inside the foreign fragments there were "viruses".
Now, on Earth, there is a ravage, bloodshed and fear.
But it is time for humanity to return its legitimate lands.
They send volunteers to the wastelands for investigations.
One of these agents, Iliss, is out of luck when the helicopter that
had to pick it up and crashed. Now she is alone and wild wasteland.