User blog comment:MrHatNClogs/Shinigami origins???/@comment-1332195-20100517222034

What I meant was along the lines of 'who first found out how, and taught others'. There has to be someone, maybe it's Yama himself, who first figured it out and introduced the concept of what is now know as a Shinigami, and later founded the Shinou academy. No use having an academy no-one knows how it's done, is there?