Mansai contributed so much to the appointment of Shogun Yoshinori by lot (creating Lottery Shogun) that even Shogun Yoshinori, who was a tyrant, did as Mansai suggested on most occasions, feeling his obligation to Mansai.
くじ引き将軍義教を登場させたのは満済の功によるところが大きく、恐怖政治を行った義教も、満済の建言には多く従ったという。