However, vassals of the Inada clan, the keepers of Sumoto-jo Castle, who were known for the Kogo incident (also known as Inada uproar), were exceptionally promoted to the warrior class under strict conditions such as their migration to Hokkaido.
ただし庚午事変（稲田騒動）で有名な洲本城代の稲田氏の家臣は、北海道移住など過酷な条件の元、例外的に士族に取り立てられた。