Hand/Fingering under pantyhose using an anime-style dataset.
Weight: 0.6-1.0, 0.8 seems to be a decent middle-ground.
It somewhat works with other types of legwear like skirts, jeans, shorts even if it was not meant to.

Triggers:
selfHUP if you want the character with pantyhose/clothes to insert their own hand
anotHUP if you want another character to do so

I've tried to include as much diversity in the dataset as I could (easily) find, so most poses work.
The panties under pantyhose are definitely not perfect, though if you don't manage to get a satisfying result, there are great LORAs for that.

If you get index/pinkie outside of the fabric, try to remove "fingering" from your prompt and keep "hand under" as fingering is a massive pose/action trigger for NSFW models.
The added prompt helpers are NOT mandatory, but when lowering the weight for whatever reason, they help.

DISCLAIMER: This will somewhat influence image style, but I barely used any style tokens in my prompts nor did I use a single LORA. Source images are scarce for this, it's necessary to keep most of the image for proper arm geometry (I tried to crop and it was a disaster) , and I myself am not great at varying style so yeah.