Marushimmasamune

Marushimmasamune is produced by Koyamashuzou KK, a sake brewery based in Japan. The Masamune designation has long been associated with premium sake brewing, and the Koyama family name connects to a lineage of sake makers with deep roots in Japanese brewing history. Detailed information about this specific brewery's founding, regional location, and production philosophy was limited in available English-language sources at the time of research.