Originally Posted by
Lily Emilio
More like it is a thing for True Ancestors and Elementals in general.
They are in essence "extensions" of the planet, so they can be "candidates" to be in the role of the "brain" of the planet, however only very few of them meets the standards to become the brain. So naturally, if the planet see that it has multiple TAs or Elementals of very close quality and power, it has to pick one it deems the most fitting. Idk how the planet itself will choose candidates, but it seems in the case of Arc vs Altrouge, because their quality are very close to each other, shit about to go down in the future to decide which one of them can become the true Type Earth. Her FGO line here implies that this version of her is now free from that duty, w/e that means. Someone else became Type Earth? (Altrouge won?), or it's a tease for FGO's future storyline.