The boy, Bochi Hiro, is being horribly bullied by his schoolmates and isolated from the rest of the school. However, one day, the world changes when a "dungeonization" phenomenon occurs and monsters appear. While screams of horror fill the world, Hiro discovers that a unique skill called "Shop" resides in him! A non-standard skill where you can buy everything from food and commodities to unrealistic items from, as long as you have money.With this power, I can survive alone..!Having made up his mind, Hiro immediately puts his skills to good use. He defeats monsters, buys cute familiars, earns lots of money with fantasy items-Eventually, Hiro’s actions will have a major impact on the turbulent world!Let the carefree and exciting days of a persecuted boy begin!