User blog comment:Nick D Wolfwood/Hell, where naughty Death Gods go????/@comment-44061-20100601195616

Movies are definitely not canon and anime only are filler and not really true canon material either, so i wouldn't use them as real references. So both those concepts cant enter into the argument. Most souls cross over from the human world to Soul Society by Shinigami sanctioned soul burial. Fewer Shinigami are born in Soul Society. Much like the real world there is social class from the 4 noble families. To the lesser noble families seemingly affiliated to one of the four in one way or the other and common people who are from outside the seireitei.