A reverse transported to an RPG world. Grum, a level 99 Barbarian with legendary gear,  is transported to our world after a nasty battle with an evil mage. He thinks a help wanted sign outside a coffee shop is a quest marker and ends up applying for a job as a barista. Can Grum use his RPG based view to master the intricacies of the job or will he forever remain a level 1 barista?