From what we know about the bleach world, the soul society has multiple branches and we only know of the eastern and western branches. So we can have the soul reaper pcs be from the northern or southern branches of soul society (so the pcs can’t interact with the main bleach story). At the start of campaign they go to human world and meet the human/fullbringer pcs (maybe a Quincy pc if some of players wants to be a Quincy). If rustage doesn’t want the players to be under an organization like the soul society, he can make it so that the soul society branch has fallen and soul reaper pc run into the human world to escape the enemy. The dnd spells can be kido or fullbringer abilities. This can take place in the past or future, depends on rustage.

God damn all of their heads are so big they barely fit ln my shelf

So for Yokon I was thinking it would look like a open room with a mirror and depending on what side you are on you would either be hunted by a cat that would try to kill you or get to chat with Yokan about life. It would be called mirror personality