However, on April 21, 1701, his lord Asano Takumi-no-kami drew his sword on Koke (a master of ceremony) Yoshinaka KIRA at Matsu no Oroka (Great Pine Corridor) in the Edo-jo Castle; Asano Takumi-no-kami was ordered to commit seppuku on the same day and the Asano clan in the Ako Domain was deprived of samurai status and forfeited its territories.
しかし元禄14年（1701年）3月14日(旧暦)（1701年4月21日）、主君浅野内匠頭が江戸城松之大廊下で高家吉良義央に刃傷に及び、浅野内匠頭は即日切腹、赤穂浅野家は改易と決まった。