 Renamed himself in 1736, succeeded into the Kyoto money order business under the title of in 1738, and in 1741, following the death of his uncle Takakata, Takayoshi succeeded as Hachirōemon.However, as Takayoshi incurred a large amount of debt from by spending too much on personal art collection as well as making huge donations to Saikyōji, his title of Hachirōemon was passed to Takafusa in 1747 through the intentions of his younger brother Takahisa, who was the head of the Shinmachi representing the interest of the extended Mitsuis at the time.In 1750, Takayoshi handed over the Kita branch to his second son Takakiyo, but the squandering was not settled, so in August 1756, Mitsuis negotiated with Takayoshi and made an agreement that they paid him 1200 "kan" retirement pension, and Takayoshi agreed to withdraw from Mitui's financial business.