They survived World War II and lost decades, but not 2026. Japan's century-old businesses are disappearing at a record pace

Founded in 1858, Japanese sesame oil maker Kadoya Sesame Mills has witnessed the country transform over generations — surviving world wars and Japan's asset bubble. Now, more than two decades after listing on the Jasdaq Securities Exchange in 2004, Kadoya is set to go private through a tender offer backed by Japanese private equity firm Integral. The move comes as the company navigates rising raw-material costs and heightened geopolitical risks. Japan's long-established businesses are being tested by factors ranging from a shrinking domestic market and labor shortages to succession challenges, experts told CNBC.