Hi, fu, mi, yo, itsu, mu, nana, ya, kokono, towo."
This is a traditional expression, but its meaning is unknown it is thought of as being Japanese.
It has been said that this expression originates from an ancient Japanese Shinto myth. In the myth, the female god, called "Amaterasu," who manages the world's sunlight, once hid herself in a heavenly cave, and the world became dark. Then, according to the oldest book of Japanese history, the priest called "Koyane" prayed with words before the cave and in front of the other gods to have "Amaterasu" come out. Although the words said in the prayer are not written, a legend says that these words were, "Hi, fu, mi...."
"Amaterasu" is hiding in a heavenly cave; "Koyane" is praying and "Uzume" is dancing.
Joseph Eidelberg stated that this is a beautiful Hebrew expression, if it is supposed that there were some pronunciation changes throughout history. These words are spelled:
"Hifa mi yotsia ma na'ne ykakhena tavo."(just silly pun??

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This means: "The beautiful (Goddess). Who will bring her out? What should we call out (in chorus) to entice her to come?" This surprisingly fits the situation of the myth.
Moreover, we Japanese not only say, "Hi, hu, mi...," but also say with the same meaning:
"Hitotsu, futatsu, mittsu, yottsu, itsutsu, muttsu, nanatsu, yattsu, kokonotsu, towo."
Here, "totsu" or "tsu" is put to each of "Hi, hu, mi..." as the last part of the words. But the last "towo" (which means ten) remains the same. "Totsu" could be the Hebrew word "tetse," which means, "She comes out. " And "tsu" may be the Hebrew word "tse" which means "Come out."
Eidelberg believed that these words were said by the gods who surrounded the priest, "Koyane." That is, when "Koyane" first says, "Hi," the surrounding gods add, "totsu" (She comes out) in reply, and secondly, when "Koyane" says, "Fu," the gods add "totsu" (tatsu), and so on. In this way, it became "Hitotsu, futatsu, mittsu...."
However, the last word, "towo," the priest, "Koyane," and the surrounding gods said together. If this is the Hebrew word "tavo," it means, "(She) shall come." When they say this, the female god, "Amaterasu," came out.
"Hi, fu, mi..." and "Hitotsu, futatsu, mittsu..." later were used as the words to count numbers.
In addition, the name of the priest, "Koyane," sounds close to a Hebrew word, "kohen," which means, "a priest." Eidelberg showed many other examples of Japanese words (several thousand) which appeared to have a Hebrew origin. This does not appear to be accidental.
In ancient Japanese folk songs, many words appear that are not understandable as Japanese. Dr. Eiji Kawamorita considered that many of them are Hebrew. A Japanese folk song in Kumamoto prefecture is sung, "Hallelujah, haliya, haliya, tohse, Yahweh, Yahweh, yoitonnah...." This also sounds as if it is Hebrew.