Trivia

Johann Wolfgang von Goethe's "Faust" is repeatedly and explicitly referenced in all but name. A character directly quotes from Part Two, Act V, Scene VII, in Japanese (from the original German, "Wer immer strebend sich bemüht, den können wir erlösen"). Later, two other characters depict a wager with the Devil, signed in blood, as in Part One, Scene IV. This scene culminates with dialogue mirroring a key line also from Part One, Scene IV, repeated in Part Two, Act V, Scene VI (from the original German, "du bist so schön"), by which the Devil wins the wager (both in "Faust" and in this scene).

A scene between two characters from Kyoto is set at a larger-than-life recreation of the real-life Kiyomizu-dera temple in Kyoto, a Buddhist temple adjoined by a wooden stage atop multistory scaffolding on the side of a steep cliff. Both characters fall off this stage; in real life, jumping off the Kiyomizu stage is a Japanese phrase meaning deciding on a course of action.

A scene where two characters depict a wager with the Devil uses a framed contract, signed in blood, as a stage prop. This contract is a modified artistic rendition of a real-life historical document as reproduced in the second edition of the "Dictionnaire Infernal" by Jacques Collin de Plancy, a compilation of various occult artifacts, published in 1826. Although this document appears to be illegible, it is actually written backwards in abbreviated Latin; a transcription, the fully expanded text, and a translation were each published in the 1826 Dictionnaire Infernal. The full, deciphered text states the terms of a pact between various demons and Urbain Grandier, a French priest convicted of witchcraft in 1634 in a trial which made use of such alleged evidence. The film version of the pact replaces the signatures shown on the document, and changes other minor details.