The people of this world are given occupations and weapons called Divine Treasures by God. It was said that the treasure was very strong and couldn't be compared to the human-made weapons. That's why, occupations which were called "Blacksmith", who can make and modify weapons are called the weakest. The main protagonist Relius acquired such a weak job. He gave up on becoming an adventurer and worked in an inn, but he realized that he could make "Anything".

(Source: Shousetsuka ni Narou, translated)