Omg if Nobunaga actually came to the Kumou Shrine and posed as Hirari i aM GOING TO LOSE IT. I went back to the previous chapter where Hirari (or Nobunaga) went to the Kumou Shrine and compared the hands drawn there to the closeup of Hirari's hand. It's kind of hard to tell but from what I saw the person who went to the Kumou Shrine didn't have extra lines drawn on his hand to show its a prosthetic. It could be that the mangaka just didn't draw them in or it really is Nobunaga...