Board Thread:Naruto Discussions/@comment-25192437-20150307225810/@comment-3279282-20150310182603

Minato and Kushina put their chakra in Naruto so that he would meet them and Itachi sealed Amaterasu in Sasuke's eye. If anything, what Karura did is more like what Minato and Kushina did. Her will/chakra is in Gaara's sand and protects him, this has absolutely nothing to do with Shukaku or even Gaara. Karura's will is doing the protecting.