Kuranosuke and his group arrived in Edo November 5 and took up lodging in a house in Koyama Ishimachi 3-chome near Nihonbashi, whereupon he ordered his comrades to search the Kira-tei Residence until they found a visual map of the place.
さらに11月5日に内蔵助一行は江戸に入り、日本橋近くの石町三丁目の小山屋に住居を定めると、同志に吉良邸を探索させ、吉良邸絵図面を入手した。