Ayase Jirou, a skilled 'Picker,' earns a living through online auctions selling items he acquires from those parting with their belongings. Serendipity strikes when he stumbles upon an antique mirror in a forgotten cellar, gifted to him freely. Little does he know, this mirror serves as a gateway to a parallel realm, akin to a Kakedashi Programmer's world-hopping abilities. With quick wit, he capitalizes on this discovery, profiting immensely by trading goods between the two worlds swiftly.