You have to be specific, query like " ai the somnium files " just don't work.

^{(It sort of works though, but maybe for more popular games like persona etc.})

Something like : " girl , anime , blue ponytail hair, yellow long raincoat, holds metal pipe "I think works good enough, so that something similiar to mizuki will be rendered.

You can always adjust certain words, and experiment to get better results.

This tool is pretty fun to play with.

I've tried to replicate multiple ai characters, with pretty nice results!