I'd like to commission an extreme deathfight story based on a couple of Galtmal characters from the Seakingsfemfight site.
Had you tried with ai by your own?
There're some good tools for free, like:
https://perchance.org/ai-story-generator
I know it's not like a human writer, but they are getting pretty good
(also in that site there're image generators for free and without adult content restrictions)