Other than Kugyo and lords, former hatamoto (direct retainers of the Edo bakufu) holding more than 1,000 koku territory, who became direct retainers of the Emperor in May of the same year joined.
署名者には公卿と諸侯のほか、同年5月に天皇に直属する朝臣となった旧幕府旗本のうち千石以上の領地を持つ者も加わった。