Board Thread:Theories and Speculation/@comment-25758952-20161108201740/@comment-25122992-20161108204148

Yeah, but Kushina didn't become Kurama's Jinch starting from the day of her birth, unlike Naruto. And the same with Mito, she even seems to be a fully-grown woman when she sealed Kurama into herself. Also, Eight Trigramms Seal of Naruto was stated to allow some portion of the Beast's chakra to leak out and naturally mix with its Jinchuriki's chakra, so it can also explain his whiskers appearing.