Well, let's delve into the intriguing story behind the name "MOS Burger." The company cleverly crafted this moniker using all capital letters as a backronym, which essentially means forming a word from a phrase. In this case, MOS stands for "Mountain, Ocean, Sun," conjuring up images of nature's beauty. However, it's interesting to note that the company's roots trace back to a spinoff from Atsushi Sakurada's earlier venture, Merchandising Organizing System.