In this case it is thought that the people who lived in the northern Tohoku region and Hokkaido and in the Satsumon period were the pure Emishi, but that those in Hokkaido turned into Ainu while the Emishi in the Tohoku region and the Fushu, who moved into the Japanese territory, became Japanese.
この場合、北海道から北東北にかけての広がりを持った擦文時代を担った人々こそが蝦夷であったとみなし、北海道の蝦夷はアイヌ人に継承され、東北地方の蝦夷と国内に移配された俘囚は日本人に合流したとされる。