In A.W.1500 through D.B.System，
the materialization of network resources
it is no longer an illusion.
It has become part of the culture
and integrated into our lives.
After 734 Year
there is an unpredictable raid.
Someone generates a lot of data pets
through the 「D.B.System」 and
instructs them to attack indiscriminately.
Many people died they can only flee to their cities
Searching for safe areas to stay alive.
The player is a boy in the world
he died in this raid.
Death is not the end but another start
he was born again through high-tech technology
he became a robot.
The following story is said
「what happened after he became a robot」
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