Is the human world really earth? Is there a source which states this? There's the entire universe; different planets, different solar systems. I feel as though the Shinigami Realm would be in a different plane of existence. MissMatched (talk) 23:02, October 23, 2014 (UTC)

I believe many characters have called it "earth" in the manga and the anime. Munchvtec (talk) 11:58, October 24, 2014 (UTC)