This theory is based on the article in "Shoku Nihongi" indicating that TAKATA no Niinomi, who received Prince Oama with Kobito, was Inamori (manager of rice stores) of Mino Province.
これは、ともに出迎えた高田新家が美濃国の主稲という役人だったことを示す記事が『続日本紀』にあることによる。