Board Thread:Naruto Discussions/@comment-24142271-20140923123755/@comment-22985334-20140923170956

We still don't know how old he was when he became a member though. Not only that Fuguki was the previous owner of Samehada yet no one mentioned how much chakra he had. Also, the fact that Mangetsu could wield and master all the swords while being apart of the strongest generation of Seven Ninja Swordsmen while he himself is the best swordsman...it wouldn't be all that surprising if he had a lot of chakra.