In the year 2061, the internet is expected to be an ideal world connecting men’s consciousness, but it allowed problems such as unauthorized access to, and manipulation of, an individual's memories. However, people depend on the net for the exchange of information, and choosing to forego the net is not an option.
Therefore, a new secure network is built: Metal, short for Meta Real Network. In order to keep information secret, Metal isolates an individual's memories by covering them in a Bubble Shell, an organic cyber-wall. People accept the system, and Metal penetrates into their lives.
However, in the secure environment of Metal, people learned to unleash their instincts. Unleashed instincts push their consciousness out. The consciousness is drowning in a sea of information and exposed to various desires. However, they are also living in the real world where their acts are restricted by rules. It generates friction between the two worlds, and begins to disrupt society in the real world. The expert who investigates the causes of this strain is called a cyber-diver.
This is the story of Haru Msamichi, a cyber-diver who investigates the incidents occurring between Metal and the real world.
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