Board Thread:Wiki Discussions and Support/@comment-25560094-20141115055758/@comment-4271790-20141115060049

The fourth databook stated so. And the Truth-Seeking Balls he uses are made of the five elements and Yin-Yang Release (hagoromo's power grants Yin-Yang release, stated by the 4th databook as well). So what you see in his article is not a mistake.