The Blue Diamond Coast
The Blue Diamond Coast: From Wakasa, Japan’s Land of Ume, to the World is an exploration of one of Japan’s hidden treasures, celebrating the extraordinary history, natural beauty, and cultural heritage of Wakasa Town in Fukui Prefecture.
Nestled between the mountains and the Sea of Japan, Wakasa is home to the breathtaking Mikata Five Lakes, ancient Jōmon archaeological sites, centuries-old shrines and temples, and the traditions of Japan’s historic Miketsukuni (Land of Imperial Provisions). Its distinctive ume (Japanese plums), rich culinary heritage, and welcoming communities reveal a side of Japan that remains largely undiscovered by international visitors.
Drawing on more than two decades of experience as a U.S. diplomat and his work promoting international exchange in Wakasa Town, Ken Reiman explores how grassroots diplomacy, cultural understanding, and rural revitalization can help small communities connect with the wider world.
More than a travel and cultural guide, The Blue Diamond Coast is an invitation to discover the enduring spirit of rural Japan and the power of human connections across borders. It celebrates the idea that even the smallest communities can make a meaningful difference in the world.
Available in English and Japanese editions, in paperback, eBook, and audiobook formats.
English Edition — The Blue Diamond Coast
Available through major retailers:
Buy English Paperback on Amazon
Listen to English Audiobook on Audible
Japanese Edition — 若狭 梅の里から 世界へ
Buy Japanese Paperback on Amazon Japan
Listen to Japanese Audiobook on Audible



