The sky is filled with yellow sand and there is no one around.
This is the world after the events that brought about the end of human civilization.
A girl with amnesia and a boy who knows nothing are walking in this desolate world, seeming to be looking for something, but they can't tell what it is.
Until that day, a computer appeared in a cave, and this was the beginning of everything.
"I may know everything now. But should I know?"
Intention: "Which is more important, the present, the past or the future? If I had to choose, it must be now. Because I have lost the past, and I am destined not to get the future, only now."