He was born in the castle town of Kagoshima, second son of Kawasaki Shuemon, a low-ranking samurai. His childhood name was Ryohachi. The Kawasaki belonged to the lowest rank of castle-town samurai and lived modestly; no one imagined he would become the elder running the domain's finances.
He was adopted by Zusho Seietsu, a tea attendant serving the domain, and took the name Tomoji. The Zusho were also of low rank, with neither land nor residence, but held hereditary posts in the domain offices. His adoptive father died the next year, leaving him to carry the house while young.
He succeeded his adoptive father as a tea attendant and took the name Zusho Seietsu. He is said to have been known in town as a strong sumo wrestler and to have studied, writing late into the night. It is also said he eagerly asked carpenters about carpentry and merchants about trade.
Posted to Edo, he became tea attendant to the retired lord Shimazu Shigehide, father-in-law of shogun Tokugawa Ienari, whom many daimyo visited. Given the name Shoetsu by Shigehide, he studied tea ceremony and flower arranging and broadened his view of the world.
He moved from tea duties to the post of konando, grew out his hair and changed his name to Shozaemon, a rare transfer for a tea attendant. He went on to head the konando, gaining a foothold toward key posts in domain government. Around this time he remarried.
As criticism of the prominent aide grew, Shigehide moved him to the post of envoy. It is said that when the disappointed Zusho opened a plan Shigehide had handed him, he found written in Shigehide's hand: Do not lose heart, keep striving.
He became town magistrate of Kagoshima. In a town dominated by samurai the post was not a key one, but townsmen he met at this time later served as his advisers in the financial reform, and these encounters supported his later work.
Satsuma's debts had reached about five million ryo, and retainers' stipends went unpaid. Ordered by Shigehide to lead reform, Zusho is said to have first refused, seeing no hope of success, but accepted when Shigehide pressed him fiercely. From then on he gave up all his hobbies and devoted himself to work.
As the reform gradually bore fruit his stipend rose repeatedly, and this year he gained elder rank and was told to call himself an elder to outsiders. Each year he traveled from Kagoshima via Nagasaki, Osaka and Kyoto to Edo, directing work everywhere, so he spent only two or three months a year with his family.
He is said to have made merchants in Osaka and elsewhere accept repayment of the five million ryo debt over 250 years without interest. It was a forceful method close to default, though he compensated merchants with favors involving smuggled goods. Repayments continued until early Meiji.
Through a monopoly on brown sugar from the Amami islands, smuggling with Qing China via Ryukyu and developing local products, he rebuilt the finances until the treasury held two million ryo. Meanwhile the Amami islanders, forced to sell sugar cheaply, endured hard lives.
In the succession struggle known as the Oyura affair, Zusho sided with lord Narioki and Hisamitsu. Narioki's son Nariakira allied with senior councillor Abe Masahiro and passed on information about Satsuma's smuggling, and in Edo Zusho was questioned by Abe about it.
In the twelfth month of Kaei 1, January 1849, he died suddenly at the Edo residence; some say he took his own life to keep blame from reaching the lord. His family lost their stipend afterward. Long maligned, he has been reassessed as the man whose rebuilding of finances underpinned Satsuma's strength at the end of the Edo period.
Kyokutei BakinTakadaya KaheiSatō IssaiHirata AtsutaneMamiya RinzōRai San'yōHirose TansoAizawa Seishisai
People of the Edo period ・ People by period
Based on facts found in textbooks and biographies. Uncertain points are marked as such.