Quote Originally Posted by shinta|hikari
I also considered the name Maria, but forgot to write it down on the list of clues. This point actually seals it. There is only one Christian nation in Asia I believe, and that country sends a lot of migrants to Japan, and the physical characteristics fit as well.

Can anyone guess?
Philippines?
I admitt I had to Google it though I liked the idea of Brazil, that may add some samba (and with luck brazilian esoterism) to the show