Board Thread:Wiki Discussions/@comment-1514283-20140911040828/@comment-25418166-20140914031033

Rather than a kekkei mora, I like to think of the truth seeking balls as something that comes directly from the sage himself, and only those with some sort of the sages chakra can form. The only ones besides him who could make them are Madara, Obito and Naruto, who all had some sort of the sages chakra. Which could also explain the ball of energy that appeared when Naruto and Sasuke's chidori and rasengan met in the valley of end. There attacks met and and due to their Indra and Ashura chakra the result was the sages chakra, and thus, a truth seeking ball of some sort.