Board Thread:General Discussion/@comment-28911833-20160703050910/@comment-1458758-20160703183242

Candleinthenight1 wrote: lol that analogy....well when shirou died satan was no longer able to possess his body.

Yeah, cause Shirou's body is human and started breaking down the moment Satan possessed him. We know demons can possess the dead cause Ghouls are a thing, so assuming Satan possesses the same capacity, he could possess Rin's corpse and still have a body much more capable of containing his power than the average human.