Board Thread:Naruto Discussions/@comment-26477744-20150608194135/@comment-5407586-20150608194446

Then Gaara's a Sage too? As intriguing as it may be, no, the black rings are not signs of Sage Mode but of Magnet Release use in Rasa's case, and for Gaara, Gamabunta said that it was because of the insomnia induced by Shukaku.