When Ieyasu TOKUGAWA entered Edo during the Tensho era, Heizaburo SHUZUI of Kofu went to Edo and asked Ieyasu for the right to control the Kenko (leather scale) business in Kanhasshu (the Eight Provinces of Kanto region), explaining the old relations from Kofu.
天正年間に徳川家康が江戸に入ると、甲府の守随兵三郎は江戸に出て甲府以来の旧縁を述べて関八州の権衡業を司ることを求めた。