Japan Miyagi Marumori Town Sairi Mansion

From the late Edo period to the early Showa period, Saito Risuke was a wealthy merchant who prospered for seven generations, engaging in a wide range of businesses, including the trade in kimonos and heavy goods, brewing miso and soy sauce, and sewing.
As each successive head of the family inherited the name "Saito Risuke," the family was commonly known as "Sairi."
At its peak, the family had a net worth equivalent to several billion yen in today's value.