Adapted from the famous radio show, Dear Girl ~Stories~ hosted by Kamiya Hiroshi and Ono Daisuke. Hibiki tells story about two voice actors who host a radio called Dear Girl ~Stories~. However, behind that radio show, Kamiya Hiroshi A.K.A HiroC and Ono Daisuke A.K.A OnoD also work in a secret organization called Dear Girl ~Stories~ Hibiki whose purpose is to help girls in trouble.