On an idle afternoon, you read through a spellbook you just acquired. It contains a lot of forgotten knowledge, much of it extremely dangerous. You can't wait to try out some of the spells. One says something about summoning a 'Horrible Creature'.
You need a subject to experiment on.
You walk through into your laboratory and call for one of your servants. You give her orders to fetch a volunteer from the village. You continue studying the spellbook while you wait.
Yes, you really must test this.
Suddenly, one of the doors opens. You look up and see your servant girl enter.
"Where is the volunteer?" you ask.
"Here!" she replies, pulling a villager through.
You look at the terrified man in front of you.
"This is no good at all," you mutter.
The man looks miserable. He has a terrified and dejected look about him. This isn't going to work.
"Did you volunteer?" you ask him.
"No, my lady!" he replies.
"Let's try again," you say. "Both of you get back to town. Come back with a willing volunteer!"
The man leaves, and the girl stays behind. She looks at you with a mixture of fear and desire.
"You need someone for a sacrifice."
"It's not a sacrifice. It's an experiment. Go and do your job: find me a volunteer!"
The girl nods and walks away.
You continue to study the book. It is a fine acquisition. It hints that you could create an army of powerful creatures under your control. You could rule the entire kingdom! ... How tiresome that would be.
Very soon, you hear a knock at the door. You walk over and open it. There stands your assistant, looking very nervous.
"Where is my volunteer?" you ask.
"My lady, I am your volunteer," she replies.
You look her up and down. "This is most irregular!"
"I'll do it, my lady," she insists, fearfully.
"Are you sure you want to volunteer?" you ask.
"Yes," she says.
"Very well then. You may come in."
She walks inside and looks around.
"Have you signed all the requisite forms?" you ask.
"Yes, my lady," she says. "I prepared the paperwork myself the way I was taught."
"Excellent. Undress, if you please."
She does so promptly.
"Very well then, we shall begin the experiment. I shall have to restrain you."
"Go ahead, my lady," she says.
Using cloth, you tie her hands behind her back, and blindfold her. Then you attach the restraints to her ankles that will keep her legs parted.
"Do you have anything else to say?"
She remains silent.
"Good. Now, let's begin."
You flip open the book.
The spell of note allows you to summon creatures from another plane of existence. The illustrations are... fascinating! However, you will need to test it to see if it works properly.
And now is as good a time as any.
You move your subject to the centre of the summoning area. You stand her up next to the black stone table. You walk up to her, and begin to chant.
As you chant, you expertly paint the summoning circle around her. As you complete each glyph, you see her body go rigid in anticipation. You complete the final symbol.
The girl floats into the air as a dark portal opens beneath her. The words of the ancient language course through your lips easily, as if you have been speaking them for years.
Shapes begin to reach through the portal. It's just like in the illustrations! Tentacles! How marvellous.
The tentacles reach upwards, groping blindly into this world. One of them finds the girl's ankle and grabs it.
She screams.
"Just try to relax and let the experiment proceed," you tell her.
The tentacle winds its way up her leg. Other tentacles have also begun to find her body. They are black and shiny. They look like they might be wet, or oily.
"Could you describe what you're feeling, please?" you ask her.
"I... I don't know," she says. "It's like... a tingling all over my body. And a weird pressure."
"Thank you. Can you feel things touching your legs?"
"I can... Yes!"
The tentacles wrap themselves around her legs, moving up her body. Her legs quiver.
"Good. Tell me what they feel like, please."
"They feel like they're moving up my body," she reports. "I can feel them..."
"How do they feel? Cold or hot? Wet or dry?"
"They're... They're wet. And slimy."
A tentacle wraps itself around her waist, moving up towards her chest.
"Is the sensation of them pleasant?"
"I... I think so. There's a tingling all over my body. It's pleasurable, but I also feel scared."
"I think that you are scared because this is all quite unexpected for you. I don't think it's caused by a trait of the summoning. In the interests of experimental control, please cease being frightened."
"I'm not frightened," she says defiantly.
The tentacles wrap themselves around her body.
One of the tentacles has continued to wind up her leg. Its tip now finds the girl's slit and prods at it curiously. The girl begins to moan, as if in sexual pleasure...
"Stop that!" she says.
"Please don't try to resist the experiment. You did give full consent to this procedure in writing," you remind her.
"I don't want to have sex with a monster!" she says.
"Your wishes are no longer an issue. The experiment will proceed to its conclusion."
While the first tentacle still probes uncertainly at her snatch, another has found its way towards her ass-hole. It begins to prod at it too.
"Ah... stop!" she cries out.
The tentacles begin to move in, sliding into her ass and pussy as one.
"Could you describe the sensation you're feeling for me, please?" you ask.
"It feels! It feels like my body is being violated," she says.
The tentacles begin to fuck the girl ruthlessly.
"Good. Is the sensation at all painful? Or is it pleasant?"
"I don't want to have sex with a monster!" she says again.
The tentacles continue to move in and out of her.
"I have already noted that. But since it's happening anyway, please describe how it feels."
"It... It feels good!" she says.
You watch as the girl is violated by the tentacles.
"Hmm. Just how good does it feel?" you ask.
"It feels incredible! They're so slimy and long!"
The tentacles have started to move inside her body.
"And thick!" she says.
Other tentacles have encircled her breasts and are teasing her nipples. The girl's breathing has become heavier, and you can tell from her face that she's reaching her peak.
"Could you evaluate the penetration? Is it deep and filling?" you ask.
"It's... It's incredible! It's so deep, it's like it's part of me!"
Some tentacles have reached her neck.
"And how does the rest of your body feel right now?" you ask.
"My body... Feels great! All I can feel is the tingling!"
"Yes. I believe that may be an effect of a drug secreted by the tentacles. Does this tingling feel very good?"
"Mmmm... Yes!"
The girl's face has become contorted in pleasure. You can tell she's reached her climax.