Board Thread:Theories and Speculation/@comment-7292165-20141114192456/@comment-3279282-20141114194457

He also didn't say what natures make up Futton and Mei's Yoton. We only know the natures for Roshi's Yoton and Darui's Storm Release through data/fanbooks, too. And hell, the natures for Shakuton were mentioned by Minato, but there's no 100% proof that they make up Shakuton because the author didn't say so.