Thread: Japanese Razor Question.

For tomorrow's shave, a Tanifuji Airi. The edge on this razor is unbelievably smooth and sharp. I'm a relatively new straight shaver, but my son has been straight shaving for almost two decades. He's passionate about Japanese razors. I've noticed that several of my son's Japanese razors have this shape blade. Is this a common shape for Japanese razors or is it just an indication that part of the blade has been removed. I haven't seen any solingen or sheffield blades with this shape.