"Won't I be able to get filthy rich if I use this skill?" <br> Continually exploited at work, Amata Shirou quits his job and moves to his grandma's house. When he finds out that it's connected to another world, he comes up with a plan to set up a business selling Japanese goods. <br> The story of a man getting rich using his skill that converts the currency of the other world to Japanese yen and so forth.