"This exceptional masterpiece is called the Moon Dagger," Klaus said, his voice tinged with excitement. "A ritual item passed down through the Mikazuki clan from emperor to emperor. It is said that the blade has an enchantment that allows it to recognize the true heir to the throne from a single drop of blood!"
If he had heard this a month ago, Dante would have dismissed it as just more insane behavior from people who didn't know better, but now that he knows Sorcery exists, he started to see the sickle in an entirely different light.
[The Mikazuki clan is a family of Aetherions, or Sorcerers, as they are referred to by your people.] Said Volcan. [It is likely that the Moon Dagger is an artifact capable of sensing a certain Aether frequency. I might be able to confirm this theory if we get the chance to analyze it.]
'I will work on that…'