User blog comment:Hitsuji Mamoru/Monthly All-Out Speculation Topics Schedule Blog/@comment-29543192-20170116102106

I updated my theory, or rather changed it. Well he seems more likely to be the Angel of Death not just because his NP is named after it. It's more like an in-depth WHY his NP is named Azrael, the Angel of Death. Though a Christian would call him the Horseman of Death because of how close he is to it. (I'm not Christian)