Despite Twilight and her friends’ great efforts of Twilight of preventing King Sombra from entering in the Crystal Empire and conquer it, he managed to do it, killing Shining Armor and dominating and controlling Cadance, Twilight and all the other ponies. With them, he also managed to conquer the entire Equestria and covered it with all its darkness. He was now the absolute king and ruler.
All those who could face him were under his control. All except one, who was the one who wasn't corrupt, the one whose heart wouldn't let his darkness from enter in it: Princess Celestia. Thus, he locked her in the dungeon of the Canterlot castle. But Sombra wouldn't give up until he could control Celestia. Not only because she was powerful, but because no one face him as she did many times in the past. It was then that he discovered a way of corrupting her, a form he wanted to immediately try.
He down to the dark dungeon and opened the door of the cell where Celestia was. There she was, the oldest alicorn princess and the one that resisted to his power, with the hooves and wings in chains, completely at his mercy. He approached her that lifted her head and, seeing Sombra, she said, gruffly:
"What do you want? Did you come to enjoy your victory again?"
"You know I can't enjoy my victory" Sombra, passing his hoof trough Celestia’s face, something she was trying to avoid at all costs. "Not as long as you keep resisting me."
"I would never join you, Sombra!" Celestia replied. "Even if the universe were on the brink of ruin!"
"Why do you keep resisting me, Celestia? It’s over. All Equestria is mine. I control everything. There's nothing you can do about it. There is no hope. The only sensible thing you can do is accept me as your king and accept your role as my personal slave."
"NEVER! I will never give up my moral and my principles to join you, Sombra! You may have managed to corrupt all the others, but you will never have me!"
Then Sombra made his evil and manic laughter, a laugher that was able to freeze a pony even in the deepest hell.
"That's what we're going to see" Sombra said. "You know, I figured out a way to get your servitude. And, believe me, I don't know how I didn't think about it before, having you here, stuck and completely subjugated."
"Whatever you have in mind won't work" Celestia said. "You can be sure of that."
"Honestly, I doubt about it" Sombra answered, using his magic to get out his cape and his armor piece by piece. "This way is unbeatable, much more effective and practical and... it gives me much pleasure in doing it... literally."
"What is it?" Celestia asked, already starting to get scared.
"Something I've always wanted to do" Sombra answered.
He then approached Celestia, having his body almost touching hers, and then gave her a kiss on her face, saying afterwards:
"I always wondered what it's like to be inside of you and now I have the will and the reason."
"Do you really think violating me is going to corrupt me?" Celestia asked. "You're really basic if you really think if that will work."
"Dear Celestia, darkness doesn't want to know the way I use to infect other ponies with it, since they accept it" Sombra responded. "If you feel the pleasure of being with me, you'll accept the darkness in your heart."
"I’ll never feel happy to be with you, Sombra!" Celestia exclaimed.
"That's what we're going to see" he replied. "You know, I'm pretty good at that. And I'm going to show you that right now."
And then he started kissing Celestia, starting around her neck and down to her chest. Celestia felt sick for feeling Sombra’s lips touching her body. It was like being touched by filth itself.
Sombra descended his kiss until he reach Celestia’s pussy. When his lips touched it, Celestia almost shuddered. She tried to move away from Sombra, but he just grabbed her hindlegs and opened them, continuing to kiss her pussy, then sticking his tongue inside it. Then he stopped after a while and then said to Celestia:
"Prepare yourself, my dear, now you’ll know how a real stallion is."
Then he prepared his erect member and then he introduced it in Celestia’s pussy. She moaned at the feeling Sombra inside of her against her will. Sombra started thrusting with a lot of virility. He did it in such intense and wild way, like an animal devoid of reasoning. Despite early Celestia hugely find it painful and humiliating, besides being disgusting, she began to enjoy. Her moans of pain became of pleasure. She tried not to feel any pleasure, but there were already many centuries that she wasn't with a stallion and Sombra was very virile.
Hearing her moaning of pleasure and practically delivering herself to him, Sombra smiled maliciously. It was just what he wanted. While thrusting, he charged his twisted and red horn with his black aura and Celestia’s horn began to shine with the same aura and then her eyes sparkled in the same way that Sombra’s. She finally was under his control.
"Oh, yes!" she exclaimed with delight. "Go on, my lord! Go on!"
Sombra did so, increasing gradually the intensity of the thrusts. It was then that he stopped and he and Celestia recovered the breath. He withdrew his cock from Celestia and later asked her:
"Did you like it?"
"I loved it, my master" Celestia replied, looking Sombra with her eyes now filled with darkness.
"From what I see, it seems that I managed to earn your loyalty" Sombra noted.
"I'm all yours, my master" Celestia replied.
"Perfect" he said.
Sombra then used his magic to loosen Celestia’s chains from the wall and then hold them down, in order to put her lying on the floor, facing upwards. Sombra then put himself on top of her and, using his magic, he began to stimulate his member. That's when he reached his orgasm and ejaculated on Celestia, filling her coat with his seeds. After this, he left off her, using his magic to free Celestia, and then said:
"I think it’s better you arrange yourself, my slave. I have things for you to do."
"As you wish, my master" she replied, rising a little. "I'm at your service with all my heart and all my soul."
Sombra then came out of the cell, smiling, because he finally had everything he wanted: a kingdom, slaves and now somepony able to satisfy his sexual desires.
