Is Dazai or Osamu his first name?!
Because in certain cultures namely Japan in this case, go Last Name;First name. And when he introduced himself in the anime he said, Dazai, Osamu Dazai. So that brings. Me the question if the ADA and every one is calling him by his first name. But when I looked up the author, the actual author, his first name is Osamu. And time and time again I see it written as Osamu Dazai.