Board Thread:Manga Chapter Discussions/@comment-25319479-20151104162911/@comment-25319479-20151105074417

Joker said while talking about the fire from 12 years ago "About the day you became a demon". This guy knows the truth behind the fire and if Shinra didn't start it, he would of said "About the day you were labeled as a demon".

Pretty sure Shinra is that "black shadow", just like how Goku believed some monster killed his grandfather, when in reality it was himself while unconsciously transformed.