Synopsis
Ayase Jirou makes his money the way pickers do — buying up stuff people don't want anymore and flipping it online. One day he's poking around an old woman's cellar and walks out with a big antique mirror she just gave him for nothing. Turns out the mirror is a doorway to another world, and he can pass through it in both directions, kind of like Kakedashi Programmer. It doesn't take him long to figure out that moving goods between his world and that one is basically a cheat code for getting filthy rich fast.
