Talk:Ghoul/@comment-26306690-20151029005051/@comment-68.32.116.146-20151029013328

I think that Ishida will reveal the origin of ghouls eventually, especially now that he has introduced Shirazu's sister Haru. I'm positive her illness has something to do with the origin of ghouls.

I think the most likely origin of ghouls is a mutation in Haru's genetic disorder. I used to think that kakuhou might be symbiotic/parasitic organisms, but I think that is a lot less likely now that we have seen Haru's condition. I still think it's slightly possible and it's still my favorite long shot theory about the true nature of ghouls.