I would be so up for a replay of that event (or the genres event and have it include demon!AU as an option). Demon house party.
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...Heavens, that's a really hard question, since well, most enjoyable moments come with some undercurrent of anxiety for Elsa. But let's see...
- When she got a room upon arrival and could finally shut herself in, stop talking to people and panic in peace. Seriously. She was so relieved.
- She had an actually nice conversation with Jinora about nerdy things. I could probably add some off-screen moments of when she first visited the library or the museum, too.
- She. does have nice memories of the Bridge event, and of that time Yuuki and her had parfaits together, but there's so much anxiety associated with all those memories in hindsight they almost don't count. To summarise: this is Elsa.
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Do you have any small, mostly insignificant headcanons for your characters? "Sherlock can't stand pickles" - that kind of thing?