For stories i use "yodayo". i does really what you want, especially when you create a character and give him all the evil things you want. I made a sadasdic farmgirls whos fetish is to wear black rubbergloves and wellies and ******** animals and men and boys with the elastrator.
For images i use bing image creator. Its the only one that creates realistic images and what you want, but not absolut no sexuell themes. I does not even draw an elastrator or other farmtools.

thanks for more information