Chuya MARUBASHI, one of his comrades, disguised himself as a drunken chugen (a rank below a common soldier) to measure the depth of the moat in preparing for the attack on Edo-jo Castle, but roju (member of shogun's council of elders) Nobutsuna MATSUDAIRA was passing by and questioned him (Edojo Horibata no Ba [a scene on the side of the Edo-jo Castle's moat]).
同士の一人丸橋忠弥は、江戸城攻撃に備え掘の深さを測量すべく泥酔した中間に変装するが、来かかった老中松平信綱に見咎められ（江戸城掘端の場）。