Picked up a Future

There is a pawn shop in a remote location in the capital, and there are always some strange pawn items there. For example, gadgets that light up flames with just a tap. Or, a repeating weapon with a weird shape but a loud sound. Even a steel car that can run without a horse pulling it. Every item revealed there can cause countless people to go crazy. Rumor has it that behind this pawn shop, there is an unknown world connected to it, where there are many steel and weeds, and everything you look at is full of devastation...