The song that plays when Frieren releases her mana (it might not be the full thing btw ;) ) is called “millennium mage”. That shot with her and flamme with the shadows of the clothes blowing in the wind is fucking gorgeous .
This show has sooooo many gorgeous shots, we easily have like 4 different choices per episode to choose for the thumbnail lmao and thank you for letting us know the song, I (David) will check out the full version for sure!
Honestly, Aura took every possible precautions to fight Frieren. She even expected if Frieren even tried mana supression by looking at her mana. She just didn't know how old Frieren was and how long she was supressing it. Respect to both of them as proper mages and not just cocky dumbasses thinking their hot stuff and losing. 👌
The Anime tells much but shows more. You can find many details that add to the story, or explain things or leave room for interpretation. But a big part of this are the German words 😛