Senketsu is a sentient sailor uniform and a central character in the anime series Kill la Kill. He was created by Isshin Matoi and is worn by the protagonist, Ryuko Matoi, to grant her powerful abilities in battle. As a Kamui, Senketsu is composed of Life Fibers and is unique in his close bond and communication with Ryuko. He serves both as her powerful armor and a wise, caring companion, playing a vital role in the fight against the oppressive Kiryuuin family.