"Are you sure this is a good idea?"
"For the last time Nirvelle, this is a brilliant idea and I will be doing it with or without you."
Nirvelle tried to give Lyrinia her best 'I'm really, really concerned' look, but it wasn't going to work. Ever since she found out about this spell, Lyrinia had been obsessing over it day and night. Nirvelle had hoped that time would make her see sense but it seemed to have done the opposite. She figured the best she could do for now was to stay with her and make sure nothing went disastrously wrong. Lyrinia understood Nirvelle's concerns but paid them little heed. Frankly she was shocked Nirvelle wasn't as excited as she was given the potential of what was to come.
It had all begun with Lyrinia trying to research an effective 'enlargement' spell. She found plenty of spells designed to make objects bigger and even the odd one or two designed to make a whole person bigger, but nothing that would work as precisely as she wanted it to. All she wanted was to be able to 'enlarge' the cocks of any men she may decide to sleep with, nothing else. No man had ever satisfied her in that regard and was it really too much to ask for? She supposed the spells for making a whole person bigger could work to that effect, but she didn't like the idea of the man becoming so big overall that he could feasibly fall on top of her and crush her to death.
All of her research had finally led to resorting to the darker side of the mystic arts. She still wouldn't be able to get exactly what she wanted but she had happened upon a summoning spell that held a very specific purpose. Ancient dark witches had devised a spell that allowed them to bear the children of all manner of wicked beasts, that they would birth and then raise for their own personal protection. Lyrinia was unclear how exactly it worked, but the descriptions the witches had written down after told of unimaginable ecstasy and made vague references to the demons being very, very well endowed.
Whilst summoning demons wasn't illegal, it was very much frowned upon for the amount of damage it could inadvertently do, so she'd had to conduct most of her research in secret, the only one knowing about it being Nirvelle. Her friend had remained with her whilst she set up her summoning circle.
"And you're sure you won't end up impregnated with some sort of demon spawn? Didn't you say that was the original purpose of the spell?" Nirvelle asked.
"Yes! I have a potion all ready to go that will render anything that takes hold within me null and void. Honestly, you act like I haven't given this every possible consideration!"
"Excuse me for thinking summoning demons to satisfy your need for big cocks is an irrational thing to do..."
"You are forgiven," Lyrinia grinned back.
It was time. Lyrinia removed her clothes and laid them outside the circle before returning to it. Nirvelle looked slightly red faced at seeing her friend naked, but fought through it to stay and make sure she was ok.
"Now remember," Lyrinia said to her, "whatever you do, don't step into the summoning circle until the summoned beast is gone. I don't know exactly what will happen, but the books made reference to something bad taking place if it does ok?"
"Ok," Nirvelle said, her nerves and dread starting to rise exponentially. "Please Lyrinia, don't do this!"
Either Lyrinia couldn't hear her or chose to ignore her as she began to start the incantation. Nirvelle watched, her heart pounding in her chest, as Lyrinia knelt down in the middle of the circle. A faint, red glow started to emanate around the edges of the circle. It grew in intensity as Lyrinia continued to chant, the light pulsing as its intensity increased. Thin cracks of light began to permeate the floor like tiny fractures slowly making their way towards the middle of the circle where Lyrinia was knelt. She spoke the final words of the incantation with a level of enthusiasm that scared Nirvelle.
With those final words, the fractures of light in the floor widened as they came together in the centre of the circle. Another circle materialised in the air before Lyrinia, the centre a pitch black void that gave no indication of what lay within but that seemed to be staring at her. Nirvelle stood staring at it in shock as a low growl came from within it. Whatever it was began to speak.
"Witch," it spoke with a deep, gravelly voice. "It has been a millennia since one of your kind has dared summon me. I have little patience for petty wants and needs. Speak now, and I will decide your fate."
Nirvelle looked back to Lyrinia who should have been trembling with fear were she of sane mind but instead was smiling with glee.
"I have heard tales of the sexual prowess of demon kind. I humbly offer myself as an instrument of sexual pleasure."
Nirvelle heard deep, ghastly laughter coming from the abyssal hole.
"Your forebears felt much the same way. I admit, I have missed the way a human feels to toy with. Fine, but first I offer a gift..."
The fractures of light from beneath Lyrinia suddenly shone with a blinding flash.
"As you will see," the voice continued, "I am a merciful and kind god. Remain within this circle, and no harm can come to you."
Lyrinia lurched forward, bracing herself with her hands. Light from the fractures seemed to surround them and Lyrinia felt she could not move them anymore, even had she wanted to. She felt something similar happen to her legs, holding her in position on all fours and spreading her open ready for whatever this demon had in store. She felt a tremor of anticipation ride through her body.
Nirvelle watched the display in fear. What the hell had Lyrinia gotten herself into? Another circle was forming in the air just a few inches behind Lyrinia's exposed pussy and ass. From within the hole something started to extend outwards. Whatever it was was red and fleshy and it was making its way further and further up Lyrinia's spine until it finally reached just over half way. Nirvelle wondered if it was maybe an arm or some sort of demonic limb, but only a small amount of further inspection was needed to tell her exactly what it was. It was a long, hard and thick cock. It was like seeing some grotesque, supernatural glory hole.
"You feel what is laying on your back, witch?" the voice said.
"Y-yes," Lyrinia trembled, out of anticipation rather than fear.
"As a merciful and kind god, I offer you one final chance to change your mind. No harm will come to you in the circle, I remind you of that, but should you agree to continue, you will be mine until such a time as I am through with you."
Nirvelle was willing Lyrinia to change her mind, to take the demon's merciful offer and leave. But the sex crazed look in her friend's eye told her she had no intention of leaving.
"I am yours!" she cried victoriously.
With that, Nirvelle watched as the huge, intimidating cock pulled slowly back down across Lyrinia's back until all of it was almost back in the circle before it angled down slightly and began to push forward again.
"Oh, oh fuck! Oh god that's huge!" Lyrinia cried out in glee.
With almost a pop, the demon's cock breached her pussy and started to move deeper inside her. Nirvelle moved around the circle to try and assess the damage. She'd already decided that if things got too much, consequences be damned she was stepping in to put a stop to this. Her jaw dropped as she saw how wide Lyrinia's pussy had been stretched open. It looked like it could fit a whole fist in there without so much as a pinch of resistance now.
"Oh this is fucking incredible!" Lyrinia moaned.
She'd never felt such pleasure in her entire life and the demon had been good on his promise. She felt no pain, only pleasure, even as it became clear that the demon's cock was too big for her insides to be expected to handle. Her cervix had seemed to offer no resistance whatsoever and so she was certain the demon was in her womb, but it was exactly what she had wanted.
After continuing to push forward with an alarming amount of length, Nirvelle saw the cock finally start to retract a little. This didn't last long as suddenly it pushed forward again with a considerable amount of force, causing Lyrinia to scream in pleasure.
"Fuck yeeeeees!" she cried.
The huge cock continued to piston in and out of her whilst the light held her in place. She looked down at her stomach for a moment and felt a swell of astonishment as she saw the demon's cock stretching the skin of her torso up to between her breasts. This was the fucking she'd well and truly wanted.
