I admit that was not an author name I was expecting to run into on this site.
I understand the tradition of attributing the original author of the un-adapted text from which manga is derived, that comes into play here. But the idea that they raised Hitler as a zombie and got him to work on the script for a manga is far more pleasing to me.
@Grimmycoffee: I must admit that, "From what I've heard," is not a preface that inspires much confidence when discussing the attribution of world-changing events to the Jewish people—given that entire subcultures are, for legacy reasons (that are for once entirely pertinent to the manga at hand, hah), based in large part around inventing sinister-sounding things for "the Jews" to have, supposedly, done.