They realized there was no choice but to sign the Treaty, however as signing it without Imperial sanction would be a great impropriety towards the Imperial family, they made an unscheduled visit to the castle (dates for visiting normally had to be designated) in order to consult with Ii.
彼らは条約調印は止むを得ないが、「違勅調印」を不敬だとして、井伊を詰問するために不時登城（定式登城日以外の登城）した。