The head of Oshu, Harumichi Honma, was ordered by the boat bugyo (Commissioner of the board) Tajima Kuze to extract five gold coins to the Shogun family in Edo, and put it into Ryujin Maru. However, Tajima, who was the chief retainer of the shogunate, said that he was a member of the board, tetsugoro Funabashi, kumiyumi no Kami ichibei, and his son, masakichi, and others, and in the middle of the night, he killed all the members with poison in the night of the storm, threw Masayoshi, who was a fellow of the city, and masakichi, who escaped from the death of poison, into the sea and sank the boat to eliminate evidence.