After these events, the northern extremity of Japan was pushed further to the region facing to the Tsugaru Straits (which was considered to be the eastern extremity at that time) until the end of Edo period before the modern era of Japan.
これ以降近代（江戸時代後期）に至るまで津軽海峡までが日本の北端（当時の感覚では東端）となったとする。