Bee Train/Trivia

The Girls-with-Guns trilogy (Noir, Madlax, and El Cazador)

 * Hey, It's That Voice!: Each installment features a character voiced by Houko Kuwashima (Kirika, Margaret, Illis) and Aya Hisakawa (Chloe, Limelda, Jodie).
 * Mythology Gag: Each installment features a pair of red shoes belonging to Kuwashima's character.
 * In the Style Of: Each installment plays with tropes from distinct action movie genres: Film Noir, Heroic Bloodshed, and Spaghetti Western.
 * Each installment also centers on a different type of The Conspiracy: Ancient Conspiracy, Nebulous Criminal Conspiracy, and Government Conspiracy.