The Quintessence of Yin-Yang (陰陽の神髄, Inyō no Shinzui), more commonly known as Sōzōrei (創造霊, Creation Spirit), is the only Tailed Beast known to inhabit the Land of Yang. While there is not much information surrounding Sōzōrei, it is known that she is a unique bijū molded from the Sage of Six Paths himself. The First Yōkage had described the beast as "majestic, a breath-taking creature of purity" when seeing her for the first time during his travels. She exists outside of space and time and governs over the breath of life that is required for creation.