In the decades since the Eldritch War, the Seasons Calendar has become the communal way to mark the days, no matter the race or origin of those that call the world of Isekai their home.
Centuries before even the Divine Races of Isekai would set foot upon the land, the gods found themselves divided by their tenets, choosing to fall in line with those others that shared their thoughts.
The large Kingdoms of Isekai agreed upon a standard trade for the value of metals. This allowed each area to mint their own coins with images and historical icons but still have them be useful during trade during travels to far off lands.
Creation of goods is more than just a business. It is a form of art, an intense labor of skill and love.— A Master Dwarf
The rare metals of Isekai require a large breadth of knowledge to successfully and safely meld and forge two of the special metals into a single, functional item. Many smiths throughout the world tend to only work with single varieties.