He wanted to become a Knight, yet awakened with the vocation of a "Merchant"?! Young Merchant Oz made a promise with the God of Commerce, Mercury, who had lost her memories. Before Oz helps the Goddess return to the realm of gods once again, he would attain the ability of 100% forced transaction — 【The Merchant God's Scale】, as well as the use of money as weapons to fight against the great number of incoming enemies. What is the truth hidden in the fog? What direction will the tracks of fate continue in? "This time, I want to protect all of you!" The commerce-themed harem romance adventure drama begins now!!