This is a clenched teeth model involving a character making a particular face during sex trained by the artist Sususuigi. I love seeing this face drawn by the artist, so I wanted to make a lora of this idea. This is trained this with about 45 images with only artwork of the artist drawing the clenched teeth face. The lora is mainly trained with furry characters, but human/humanoid characters can work too. Just make sure you put "furry, anthro" in the negative prompts if you want human characters making this face. You can also get this face to work with the characters showing in solo (see my image examples of what I was able to generate.) I found the best results to get the face looking spot on are sex positions involving doggystyle, reverse cowgirl position, angles with a side view, or pov cowgirl position.
Positive prompts: SusuCT, clenched teeth, sharp teeth, looking pleasured, fucked silly
Extra: big smile, pregnant, pregnant sex