Japan has entered a new era. Hiden Intelligence, the leading company in the field of artificial intelligence (AI) has developed and began to test the reality of Human Gear, AIs in human form. Human Gear is designed so that it is no different from humans and is included in many different workplaces.
Meanwhile, "MetsubouJinrai.NET", a terrorist organization hacked into Human Gear and turned them into weapons to destroy humanity. The Japanese government