For a Japanese anime/manga based on French history, it is surprisingly well-researched but there are still a number of creative liberties taken.
- The main character, Oscar François de Jarjayes, is largely fictional. She is loosely based on Pierre-Augustin Hulin, commander of the French Guards who joined in the Storming of the Bastille. But that's more or less where the similarities end. Unlike Oscar, Hulin was not a noble, didn't have a close relationship with Marie Antoinette, and survived the battle to later serve as a loyal general to Napoleon (who was the one person Oscar truly feared).
- François Augustin de Reynier de Jarjayes is significantly older than he would have been in real life. He was born in 1745, which would make it extremely unlikely to have his sixth child just ten years later.
- Emilie de Jarjayes did not die of despair shortly after the Revolution broke out in real life. Reynier and her got divorced to distance herself from him due to his loyalty to the king. She later remarried and died in 1837.
- Rosalie Lamorlière was indeed the final servant to Marie Antoinette as she was awaiting execution, but everything else about her in the series is basically fictional. She was not adopted and had no relation to either Jeanne Valois or the Countess de Polignac. She also never married. Her mother did die when she was a child, but her father lived until 1812 and she had five other siblings.
- Jeanne de Valois-Saint-Rémy and Nicholas de la Motte were not tracked down and met their end in what was essentially a murder-suicide shortly after escaping prison following their convictions in the Affair of the Diamond Necklace. They managed to escape to London, where she later was killed falling out a hotel window while trying to avoid debt collectors. He survived and eventually became a bodyguard to the future Charles X before dying in 1831.
- The Duke of Orleans is a Composite Character. The Orleans of the second half of the series was Louis Phillipe II who took over the title on the death of his father Louis Phillipe I in 1785. For convenience sake, in the series they are the same man.
- The live-action film plays very fast and loose with French history. Louis XVI reign seems to only last a couple years, Robespierre appears thirty at a time when he would have had barely eighteen, and Parisians sing "La Carmagnole des royalistes" after the taking of the Bastille (a song which wouldn't exist for another several years), just to name a few examples.
