Oshinumibe was bemin sei (the system of Yamato Dynasty) of Iitoyo's representative, but it seems to have been not just a department of peasants, but a department of manufacturers (mechanic company to produce items) including Ayahito clan.
忍海部は、飯豊王の名代（こしろ）の部民制（べのたみ）であるが、単なる農民部ではなく東漢氏（あやひと）をかかえた雑工部（物品製造に携わる職工集団）でもあったらしい。