75,000 words is a drop in the bucket for A Song of Ice and Fire:

https://blog.fostergrant.co.uk/2017/08/03/word-counts-popula...

Meanwhile web serial authors: [0] [1]

[0] https://wanderinginn.neocities.org/statistics

[1] https://www.reddit.com/r/Parahumans/comments/rz8ogt/wildbows...

You'd want to generate it in multiple steps to make it feasible to control the text generation anyway. First call generates the broad outline, several parallel calls flesh out character development and some other details so that they're consistent, then generate the story piece by piece by feeding in bits of the outline.

And then you end up with what the movie did which is not exactly a GRRM novel.

That may need a million tokens just for one book, though!

I’d be excited for Dexter ending that doesn’t suck.

That's actually a really interesting use case!

Add Berserk to that list.