Honnouji Academy (本能字学園, Honnōji Gakuen) is a fictional high school situated in Tokyo Bay, Japan on the island of Honnō City. The school is dominated by its fearsome student council led by their president Satsuki Kiryuin. Its students wear Goku Uniforms (極制服, Gokuseifuku)[b] which give their wearers superhuman abilities because they are constructed with a special material known as Life Fibers (生命戦維, Seimei Sen’i, lit. “Life Battle-Fibers”). Vagrant transfer student Ryuko Matoi, who wields a scissor-shaped longsword that can cut Goku Uniforms, challenges the council as she searches for her father’s killer. Although she is initially easily defeated by Takaharu Fukuroda, she finds a sentient sailor uniform that she names Senketsu, a Kamui (神衣, lit. “Godrobe”) which is completely made of Life Fibers and transforms her so that she can face Kiryuin and her trials and obstacles. She is befriended by her hyperactive classmate Mako Mankanshoku and lives with her family.