Board Thread:Wiki Discussions/@comment-3238846-20140422105553/@comment-3279282-20140427221132

Hmm, the third databook states (as literal as possible) "At the journey's end by borrowing Yonbi's power, (Roshi) mastered the earth and fire natures fusing Yoton Ninjutsu." or (not so literal) "At the the end of the journey, Roshi mastered the Yoton Ninjutsu, which fuses fire and erath natures, by borrowing Yonbi's power."