I decided to quit my job at a black company and moved to my grandmother's house after being overworked as a salaryman. When I discovered that my new home was connected to another world, I came up with the idea of bringing items from Japan to this new world to start a business. This is the story of a kind-hearted man who uses his equal exchange skill to convert the currency of the other world into Japanese yen, gradually becoming wealthy in both worlds. *Please note that the story and characters in the WEB version differ from the book version. *This story is also being serialized as a manga.