Well, I wasn't planning on posting this, but it turned out so well, and I've already wasted my time and money on it, so I might as well share it.

What is it thing? It's based on a scene from the first episode of Urotsudoji, old as frick h-anime, For those with a very retro culture, for me it was one of the introduction of the tentacle concept. It's a simple, accurate surprise attack, and a critical hit...

Trigger words and very prompts, basically you have 2 main poses:

SURPRISETENTACLEXD, tentacle ???, vaginal tentacle insertion, tentacle grab, on floor, struggling, sitting, knees together feet apart, leaning forward,

SURPRISETENTACLEXD, tentacle ???, vaginal tentacle insertion, tentacle grab, on floor, struggling, sitting, spread legs, leaning back,

But it is very versatile, try combinations of: Bent over, arched back, lying, standing, on sides, replace leaning forward and back, arms under legs, stretched, point is, use your own creativity.