Here's the result and it looks like AI doesn't know so much about human body.
It's because AI is just in the infant level as AI just started to learn.
And also it's because of checkpoint Model that I used.
If I might have used a better checkpoint model, maybe it knew better.
However, AI is not an omniscience yet.
By the amount of database AI accumulates, the ability of the AI is judged.
The AI (or checkpoint model) that has never learned reproductive system is unable to draw reproductive system.
Right now the reason it's not so easy to make a NSFW hardcore image in AI is because the AI doesn't have enough database about hardcore NSFW images.
Currently Unstable Diffusion group is working on the open NSFW AI model including wide range of nudity and sexual scenes.
If it's coming, NSFW AI art will have a revolutionary moment.