Thread:Silver-Haired Seireitou/@comment-11293505-20140707143338/@comment-1493741-20140707144425

When a Shinigami performs Konso on a Plus in the Human World, they are sent through the Dangai and into Soul Society. They then arrive in Soul Society where they are assigned a "ticket" (by who, is never mentioned) which gives the Plus the location of where they will now live. As far as I understand it, this is entirely random, so you could just as easily end up in the Zaraki District as one of the closest ones to the Seireitei.

I remember seeing something about memory loss too a long time ago, but I'd never been able to find anything on it, and as Yuichi Shibata still remembered his mother and Sado, I've since taken it that Souls retain all of their past memories.

They just live out their time in Soul Society until they die, where they're Souls are "recycled" and return to the Human World to reincarnate as a new person.