Masatomo, who was considered the omniscient successor of the Nehan-shu sect, returned to secular life after the Nehan-shu sect was absorbed into the Tendai-shu sect during the Kanei era and opened "Fujiya," a business dealing with books and pharmaceuticals in Rakuchu (called himself Kakyu), and started a hardworking life.
宏学達識で涅槃宗の後継者と見られていたが、寛永年間に涅槃宗が天台宗に吸収されたのを機に還俗し、洛中に、書籍と医薬品を商う「富士屋」を開き、号を嘉休と称し修道三昧の生活を始めた。