His tactics of annihilating the enemy troops was an unprecedented event in Oshu region, where almost all ruling clans were relatives and kinsmen; this incident terrorized those feudal lords of neighboring territories.
豪族が殆ど親戚・縁戚同士という奥州では皆殺し戦術は前代未聞の大事件であり、近隣の戦国大名を恐怖に陥れた。