The shogunate should've raised a decent army in a couple of days to at least hold off the westerners' advance around Hikone Castle, since Omi's eastern neighbors are Tokugawa strongholds, as I posted earlier.
I don’t wish to spoil too much, but that quick Omi victory? There was some Imperial hubris bias in there. When the next update comes, we’ll see the more balance or even Shogunal biased update. The Ii are not dead yet, and let’s just say a Pyrrhic victory has occurred.