Itsudemo Jitaku Ni Kaereru Ore Wa Isekai De Gyoushounin O Hajimemashita

Wont I be able to get filthy rich if I use this skill
Continually exploited at work Amata Shirou quits his job and moves to his grandmas house When he finds out that its connected to another world he comes up with a plan to set up a business selling Japanese goods
The story of a man getting rich using his skill that converts the currency of the other world to Japanese yen and so forth