Life Fibers are a fictional, organic material featured in the anime series Kill la Kill. They are sentient threads that can bond with living beings, granting them enhanced abilities and powers. These fibers are central to the plot, as they are used to create powerful clothing known as Goku Uniforms. In the series, Life Fibers are harvested from a mysterious entity called Kiryuuin Satsuki and are linked to the overarching conflict between humans and these fibers. The story explores themes of identity, power, and the relationship between clothing and self-expression through the influence of Life Fibers.