I wanted to make a short post on the Magatama on Yoshiro's chest.
I mentioned it as Amaterasu offspring hint.
The possible relation to Nanamagari.
But there's another one.
According to legends, a human soul is locked in the magatama and can be passed on. In other words, the strength, power, and authority of the soul are passed on to the heir.
Even more interesting, if you've played Fatal Frame 2, the spirit stones allow you to hear thoughts and such from the people it once belonged to.
Is it...the magatama of the Goddess?
Is the Sacrifice ritual the Spirit of the Goddess taking over the body of the Maiden through the magatama?
Is the soul of the original Maiden passing through Maidens?
Is Soh the part of the Goddess that isn't defiled yet and exists to guide the Maiden to fulfill the pact?
Then...could it be that our Soh always guides the chosen Maiden?