Board Thread:Naruto Discussions/@comment-24142271-20140923123755/@comment-22985334-20140923165439

I mean't "Mangetsu's age" not Suigetsu's, and Mangetsu probably borrowed the sword a few times from whoever the owner was at the time. Also, we don't know how strong Mangetsu's chakra is so for all we know it could be strong.