Honnōji Academy

Honnōji Academy (本能寺学園) is a high school located atop Honnō City and the primary setting of Kill la Kill. The city is divided into four levels of residential buildings that are delegated to each student and their families based on the student's Goku Uniform ranking. The higher the Star ranking, the more prestigious the standard of living, with No-Stars being delegated to the slums. The entire city is ruled over by the dictatorship of the Student Council President, Satsuki Kiryūin, whose power is in actuality due to influence of her mother, Ragyō Kiryūin. Based on maps shown throughout the series, appears to be an artificial island in Tokyo Bay. In episode 24 end credits, Honnō City, along with Honnōji Academy, is later seen in the bottom of Tokyo Bay.

Members
Board of Directors Chair:
 * Ragyō Kiryūin

Student Council President:
 * Satsuki Kiryūin

Three-Star (三つ星) Students:
 * Ira Gamagōri - Elite Four Member - Disciplinary Committee Chair
 * Uzu Sanageyama - Elite Four Member - Athletic Committee Chair
 * Nonon Jakuzure - Elite Four Member - Non-Athletic Committee Chair
 * Hōka Inumuta - Elite Four Member - Information and Strategy Committee Chair
 * Shirō Iori - Sewing Club President

Two-Star (二つ星) Students:
 * Takaharu Fukuroda - Boxing Club Captain
 * Omiko Hakodate - Girls' Tennis Club Captain
 * Kusanosuke Yaguruma - Gardening Club Terrace General Manager
 * Kusatao Uwabami - Gardening Club Backyard Garden General Manager
 * Aizenbō Fuguhara - Ping Pong Club President
 * Jack Naitō - Knife Throwing Club President
 * Kagesaburo Kagero - Nanjing Lily Club President
 * Maimu Okurahama - Folk Dance Club President
 * Masuyo Watari - Tightrope Walking Club President
 * Ryosuke Todoroki - Automotive Airsoft Club President
 * Tōki Brothers - Pottery, Arts and Crafts Club Presidents
 * Tatamu Otte - Origami Club President
 * Mako Mankanshoku - Fight Club President

One-Star (一つ星) Students:
 * All are nameless subordinates.
 * Mako Mankanshoku was a One-Star student during a portion of Episode 7.

No-Star (無星) Students:
 * Ryūko Matoi - Transfer Student
 * Maiko Ōgure - Head of the Disciplinary Committee's Trap Department

Teachers:
 * Aikurō Mikisugi - A spy for Nudist Beach

Events

 * No-Late Day
 * Honnōji Academy First Naturals Election
 * The Great Culture and Sport Festival

Last-Stitch Defense System
Episode 25 showcases that the main building of the academy is in reality a giant war machine known as the "Last Stitch Defense System". It was intended for use against the Primordial Life Fiber but was not used due to Ragyo Kiryuin having hijacked the entire school. The main Academy building serves as the body/head of the machine, and it moves via multiple attached segmented tentacles tipped with giant hands, which are normally buried underground.

The Defense System attacks by swatting at enemies with its huge tentacles or grabbing nearby massive objects for use as improvised weapons (such as the S.S. Naked Sun). Its tentacles are powerful enough to create massive crevices in the ground. It also boasts an impressive array of guns, which seem primarily intended for blasting to pieces any target that would attempt to close the distance with the Defense System.

The System is apparently powered primarily via Life Fibers and requires at least one human with sufficient potential to serve as its power generator.

The System was hijacked by Rei Hōōmaru, who used Satsuki and Mako to power it and tried to seek revenge for Ragyo's death. However, the giant machine was destroyed by Ryuko and her Scissor Blades using the "Final Graduation Mode".