The Soga clan and the Otomo clan were able to own the Sogabe (group of people owned by the Soga clan) and Otomobe (group of people owned by the Otomo clan) also because, as the clans with Omi and Muraji (both are one of the hereditary titles) who supported the sovereignty, they held many positions in the Imperial Court.
蘇我氏や大伴氏が蘇我部や大伴部を所有しえたのも、彼らが王権を支える臣・連として、朝廷組織のなかにその位置を占めていたからである。