Please hide WN/LN/manga spoilers.
MAL entry, Anilist. The zeroth episode is a spin-off-ish, focusing on Sylphy after the Calamity meeting with Ariel, becoming “silent Fitz”, and struggling with her new situation; as well as the power struggles between Ariel and her brother I-always-forget-his-name for the Asuran throne.
Seemed like they went all in to strike controversy before getting into the story which was a bit of an eye roll. I liked the fight scene. If they they do more around the actual magic and practice of magic with protecting the princess it might be a good season.