Talk:Ghoul/@comment-46.182.138.4-20150928211118/@comment-25047329-20150928230127

There's a Quinx aptitude test that narrows down who can and can't undergo the kakuhou transplant surgery and out of an entire graduating class, there were only six candidates. It's still not known how this test works of what it looks for, but it seems that only a small number of people are able to take the surgery.