This story contains nonconsenual elements.
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For centuries humans have been the pushovers of the world. Despite being more numerous than the other races it was petty divisions that left them as easy and enjoyable prey. Elves teased and tormented them during their raids. Orcs took men and women to be their pleasure slaves. Fairies played all manner of tricks and jokes on any human they could find. Beastfolk commonly kidnap a person to act as their personal pet. No one knew what the Demons did with their captured humans, though anxious minds often come up with extravagant ideas.
Alliances between human clans were often fleeting and barely useful in staving off all the threats that faced them. That was the case until the Mortal Goddess appeared. Her influence spread quickly but quietly, and within a few short years most of humanity had found the banner they needed to gather under. The clans waited to hear what their goddess would do to face their enemies, and perhaps even tell of ways to enact vengeance against them.
The Mortal Goddess did whisper plans to her people. While her power was not infinite she could cast a small curse on each and every being that had harassed them over the ages. It was a curse so small that the other races wouldn't even know it had appeared, but strong enough that when the humans did rebel it would ensure victory.
And so the humans trained and prepared under the guidance of their new leader. Men and women grew from frail militiamen to valiant knights and soon to be heroes. The goddess then softly announced that the curse had been placed upon the other races, the time for humans to rise up and prove themselves was at hand.
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The celebrations among humanity reach an all time high. Yet another race has felt their vengeance with beastfolk pack leaders now joining the other offenders in the Hall of Glories. This race that had once kept humans as pets now have the fingers of what they thought as lesser folk tickle every bit of their skin. The Hall is crowded with prisoners and curious humans, the air filled with insane laughter and amused chuckling.
Some began to think that this was enough. Four races now knew the power of the humans and their Mortal Goddess, surely the last tormenting group would know to leave them alone? Sadly, this was not the case. The demons, while few in number, had infernal powers that seemingly kept them above any tricks humanity could pull. Each demon lived in their own sub-realm away from the mortal world, passing the time with whatever activities they enjoyed doing with their captured humans. Could the power of the Mortal Goddess reach them?
When she spoke the human clans were surprised. Their goddess couldn't have opened a path to the demons before, but the power from all the laughing prisoners gave her strength. With dozens of them being tickled all at once the goddess' magic reaches a spectacular height and it is enough to open paths to each of the demons' realms. Now all she needed were brave soldiers with the strength and will to confront a dangerous foe.
Two humans volunteered for this mission. Though they wished for more companions the Mortal Goddess only had enough magical strength to send two at the moment. However, if they returned with a demon prisoner, and have him or her be tickled incessantly, their laughter would once again bring more untold power to the goddess. Enough to send whole groups to the rest of the demons. And so these proud soldiers were sent off with hopes that they would return as heroes.
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Toroth had just finished another magnificent piece of art. The demon set down his brush and admired his work before hanging it with the other perfected pictures located in the room. His work was slow, but he had all the time in reality to create whatever he wanted. Toroth walked back over to his large easel and checked his secret painting ingredient, the edged juices from his human slaves. It was running low, so he began his walk to the rooms where he kept his suppliers.
As the demon walked, his thin pointed tail waving back and forth as he did so, he took glances at all the other pieces of art along the walls. There were dozens, and each one of them was priceless in Toroth's eyes. Every demon had a personal pastime, other than kidnapping humans of course. Humanity was a tool that brought a demon's hobby to high quality standards, and this demon had collected a new specimen that he hoped would help bring that about.
Toroth originally had just two human slaves, one woman with mid-length black hair and another with short blonde hair. They had worked well for some time as assistants to his painting, but his newest addition was much more exotic and his hopes that her different features would mean more interesting paints had paid off so far. She was a noble desert dweller with olive skin and long silver hair. Taking her was as easy as the others, the new stories that had been circulating in the mortal world meant nothing to the demon.
So what if the other races had fallen to the humans and their new power? Reality was like a web, the mortal world in the center and the demons living in their own realms on the strands surrounding it. No power that came from humanity could reach Toroth or his associates. That also meant that no rescue could come and take away his precious painting tools. So here he was, content with creating his art for the foreseeable future.
Toroth approached and opened the door holding his newest tool. There she was, naked, wearing a ring gag, and in a contraption that easily allowed the collection of her juices. Her body still looked as perfect and exotic as ever. The bondage forced her to kneel on cushions and kept her upper body straight with her arms held up in the air. A bowel was placed under her to collect Toroth's painting ingredient, and from what he could see it was a little over halfway full.
The demon approached the human to take her pooled juices. As he did so she weakly struggled in her bindings and let out desperate moans. Toroth ignored them and took the bowel while replacing it with another. The woman was being endlessly edged by three red buttons cursed with demonic power. Two large ones were stuck on her nipples while a smaller third was over her clit. The sensations they gave were influenced by how close she was to an orgasm. The closer it got the weaker they stimulated, but they never stopped and always returned to stronger teasing when the buttons sensed that the human was no longer near cumming. All the edging forced her juices to occasionally drip from her pussy into the waiting bowel to become a perfect painting piece.
This would be the woman's new life. Toroth didn't think it was bad. His infernal powers kept her healthy and she would always be experiencing some kind of pleasure. Humans were a simple folk, easy to tease and be used for a demon's purpose. As Toroth walked out of the room he decided to check on the other two suppliers while he was near. He set the bowel of juices down on a table and began the short walk. As he did so he debated doing a small experiment. Each woman had each solely provided well, but what if he mixed all their juices together to form something new? Or maybe add some of his cum to the mix? That sounded like it would produce a fine painting.
The demon approached the next door, this one held the blonde human in similar bondage. As he opened it he was stopped short in shock as he found the room empty. Toroth couldn't even process the idea that this woman was able to escape, his powers wouldn't have allowed such a thing and no lone human could break them. The painter blinked several times before deciding to investigate the bondage, maybe some answers lie there.