This is a mating press concept trained by the artist Enigi09. The artist draws a lot of the mating press position, but I wanted to mainly focus on a LORA with a character doing a leg lock. I don't see a lot of leg lock concepts, so I wanted to give this a whirl. For the LORA strength it works best 0.7. If you go any higher, then it'll be harder to control what you want to do in your prompts.
Positive Prompts: LWMP, 1boy, 1girl, sex, faceless male, faceless female, mating press, vaginal, vaginal penetration, motion lines, leg lock, deep penetration, balls, backsack, hearts, rear view, butt focus
Extra: pointing down