Board Thread:Naruto Discussions/@comment-4271790-20141104021906/@comment-3279282-20141104102558

Rage gtx wrote: @Seel, isn't YYR is very rare by databook?

Yes. If you have Yin and Yang, it doesn't mean that you have Yinyang. Only the likes of Hagoromo and naruto could use Yinyang. Basically, only Hagoromo can and he gave Naruto (and likely Sasuke) the ability to do it, too.