Say, out of curiosity, how did the remuria questline go for your version of Aether? More importantly, were Wriothsley (noted Remurian history buff) and Clorinde (marechaussee hunter) there to learn what really happened with Remuria and meet Cassiador? Because I could totally see them having internal fanboy/fangirl reactions to everything there!
I typically headcanon Aether being unprepared for most world quests since more of than not, he stumbles upon something more grand than he realized. Then when he’s confused or finds something that would interest a friend, Aether goes tell them.
The moment he found an ancient underwater civilization with books he didn’t understand and music puzzles, he swam back to grab Furina, Freminet, and Clorinde specifically. All of them had a slight panic attack when they saw the whale. I’m sure Clorinde told Wriothesley all about it the next time they had tea..
I know somewhere on this account I’ve written Aether pulling out a sword and Furina goes “Is that the sword of Narzissenkreuz!?” Sometimes Aether forgets he finds places that people spend their lives looking for.