Once he had consulted with Tsunanori and the bakufu, they adopted Haruchiyo, the second son of Tsunanori, changing his name into Yoshimasa KIRA, and on May 24, 1690, they took him into the residence at Edo Kajibashi.
綱憲や幕府とも協議の末、綱憲次男の春千代を吉良義周と改名させて養子とし、元禄3年（1690年）4月16日に江戸鍛冶橋の邸宅へ迎え入れた。