[Nobody likes an ending like that one, but he's come to realize after eight hundred years that death was a part of life. Nobody wanted to live forever, and here he was, facing down the irony of that, both in his waking life and in his works of fiction.]

It'd take work. Rehab. More work than these fearless heroes have the time for, but maybe trapping it and finding a peaceable solution there might be a better option.

They really could. When you put it that way, it's got the makings of a trilogy. Maybe they'll use magic to heal it?

[With magic being part of the lore there's a lot that's possible there and the world building being slight meant that they could lean into whatever area they wanted to and compensate with that.]

Why don't you write a book, Jinora?

[She's got the right knack for it, and certainly enough experiences to draw from for content and realism.]