A treatise on late-medieval economics slumming it as a romance LN, Spice and Wolf is for good reasons recommended to those outside of its usual target demographic of Japanese light novel readers. Depicting fully realized characters within a well-researched low-magic medieval setting, the story frames the human scale drama of a budding romantic relationship against the stark economic realities of being caught in the crossfire between feuding trade guilds. Part of a long-running series so if you like it there is plenty more material available.