- Playing Against Type: While being known for its Bloodless Carnage Girls with Guns trilogy, they also made the uber-violent, Murder Princess OVA (though still has an Action Girl for its lead), and the anime adaption of Blade of the Immortal. Another one would be the TV anime adaptation of Tsubasa Reservoir Chronicle, which has almost completely a Cast Full of Pretty Boys.
The Girls-with-Guns trilogy (Noir, Madlax, and El Cazador de la Bruja)
- In the Style of...: Each installment plays with tropes from distinct action movie genres: Film Noir, Heroic Bloodshed, and Spaghetti Western.
- Mythology Gag: Each installment features a pair of red shoes belonging to Houko Kuwashima's character.
- Relationship Voice Actor: Each installment features a character voiced by Houko Kuwashima (Kirika, Margaret, Illis) and Aya Hisakawa (Chloe, Limelda, Jodie).
- Each installment also centers on a different type of The Conspiracy: Ancient Conspiracy, Nebulous Criminal Conspiracy, and Government Conspiracy.