This is a world of users and devices. There are three kinds of people here: users, devices and ordinary people. Ordinary people have no ability and live in this world in an ordinary way, relying on their own brain and physical strength; devices can be turned into Some kind of vessel realizes the transformation between itself and another form. Through this change, they can obtain various abilities beyond the limits of human beings; and the user, as the name implies, is the user of the vessel. Due to various superhuman Abilities, tools and users occupy the upper class of the entire human society, and among them users have the highest status. Gong Si was originally an ordinary person, but because his three younger brothers awakened one after another, he had to bring his younger brothers to use The world of implements and implements...