Pulsating Aurora (a Touhou LW original) refers to an aurora where the lights flicker in the sky like they are pulsating. Perhaps the existence of this Flandre, who is broken in a slightly different way from the Flandre we know, is as unstable as an aurora. Her temperament has almost no connection to the natural laws of Phases. Vampires have many weaknesses in exchange for their tremendous abilities. However, the Flandre of this world does not have many weaknesses. In the world she originally came from, monsters were called "devils," but this did not really have any religious connotations. Perhaps this is why the vampires were not particularly sacrilegious or profane. Her old world was in the middle of some sort of renaissance where ancient demons and devils were beginning to be treated in the same way as gods and angels. (Flandre says she benefitted from the world being so silly.) She could not escape her weakness to the sun (sunlight), but water (spiritual cleansing) has actually become her forte.

The ability of Flandre Scarlet with the twisted fate. Unlike her original ability, this one has become multiplexed and localized from countless compounding distortions. This is a Flandre Scarlet from another world who did not follow the fate she was supposed to follow. The turning point was that her older sister disappeared earlier than she should have. In this Flandre's and her sister's world, there was a pivotal change in the general spiritual outlook on life that coincided with the European Renaissance of the Middle Ages. Western youkai had long existed in this world's Europe due to all the diverse faiths that were practiced, and the Scarlet Family was one of the most powerful groups of youkai. Flandre's older sister, the Devil Mistress, ruled the night and used her charisma to bring together the usually solitary youkai into the largest youkai organization in Europe. Just when the Scarlet Family was about to hit its peak, their reign ended with the sudden disappearance of the mistress. The empire that was even spoken of in human society was dying. The Scarlet Family was home to many youkai, even some from foreign lands, but they all went their separate ways in an instant... leaving only Flandre, her sister's mage, the mage's familiar, and the gatekeeper youkai. Not even the maids or the fairy under housemaids remained. Flandre didn't know why her sister disappeared, but she never once resented her. This is because she had a feeling they would reunite one day... Such a tale has not been recorded in any history annals of our timeline. However, since Flandre has spoken of this past, there is something that must be mentioned as a possibility. Unlike the Flandre of our world, it seems this Flandre used her twisted fate to alter her destructive impulses and ability into something more manageable. Apparently, the cost of this is that her energy efficiency has worsened. She prefers to fight by molding her destructive soul into the shape of Laevateinn and sealing it in place with armor magic. As a result, the Laevateinn's element has been reversed to embody "heated death" and emit extremely low-temperature flames. This matches her previous title of the Guard's Cold-Blooded Swordswoman... These things make this Flandre very different from the Flandre of our world. Back in this Flandre's previous world with diverse religions, there were some organizations that still adhered to the old faith and wanted to exterminate Remilia because she was a Devil. Flandre's main job was to deal with these vampire hunters and any others like them.