User blog comment:Njalm2/Nanja's Point of View: Shinigami Edition/@comment-24384232-20150504221239/@comment-18812574-20150505152742

Hmm, well. That's a lot of conjecture in any case. With the different realm things. I kind of would like to think that all souls go there eventually, but if you compare numbers (pop. of Human World vs. that of SS/Hueco Mundo) it doesn't really add up. Ah well, that's what fanon is for after all.

For the language thing my personal theory was that they just speak Japanese, but don't realize it. For example, an American dude dies and goes to SS, he doesn't remember ever learning a new language, or in fact switching languages at all, yet his brain works to convert automatically. Same principle in reverse when Shinigami head to the Human World. Obviously if they had to learn every single language out there it would be a problem. So maybe like an automatic converter/translator where the Shinigami speak one thing but the listeners hear them in whatever is their native language?

As for clothes, I am aware of the human clothes thing, but remember all Rukongai citizens seen, even that bird kid thing, are seen wearing Edo era style clothing once in the Rukongai. If your soul is given soul burial, the deconstruction and reconstruction of reishi particles (or however it happens) from human world to soul society, I doubt wearing a shihakusho (actual one) is that much farther of a stretch. But again, that's my personal preference on the matter.