Onikorogashi is produced by Nishikatsu Shuzo, a brewery operating in Hyogo Prefecture, the region that accounts for the largest share of sake production in Japan and is home to both Nada and Awaji Island's storied brewing traditions. The brand name Onikorogashi carries folkloric resonance, evoking the legendary island of Onogoro from Japanese creation mythology, which is associated with Awaji Island itself. Nishikatsu Shuzo draws on Hyogo's wealth of sake-grade rice and local water to produce sake rooted in the regional character of the Seto Inland Sea.
