That being said, the ukiyo-e artwork looks more like a standard colored pencil illustration, and it sort of tried to cheat by adding some vaguely Japanese natural scenery.
See this Kickstarter all the way back in 2013 for a great example of what Pokémon might actually look like as ukiyo-e woodblock prints.
https://www.kickstarter.com/projects/1499165518/ukiyo-e-hero...
https://ricedigital.co.uk/this-japanese-ukiyo-e-pokemon-art-...
When I did a similar prompt with ChatGPT 2.0 it was worse, so interesting to see improvement.
It is different from earlier image models which just use a simple text encoder and struggle with conditional logic if not explicitly trained for it.
> * Mapped Pokémon primes > * Organized the grid
before generating the image.
So really it is first figuring out the exact specification of the layout, then prompting the image generation tool with this specification - perhaps unless you do it with an "instant" model.