As a college friend of mumble rap superstar Lil Yachty, rapper/producer K$upreme came up in good company, surrounded by established rappers and big names even on his first mixtape, 2017's Flex Muzik. Born in Pasadena, California in 1995, K$upreme lived on the west coast until leaving for college in the Atlanta area in 2013. There he met Lil Yac...