Cadance had been fighting off the gas with all her willpower, but she certainly knew her resolve was loosening. "This will affect you, won't it?" She demanded. Lightning cackles evilly and says, "This gas only affects mares. It gets you very horny and stimulates your body to think you're pregnant." Cadance looked down and saw that her ass had thickened up and her tits were swelling and leaking so much milk. "And now for my plans," he says as he pins her forward near the bed. Cadance tries to struggle to move, but the heat makes her movements laborious. "Wait! I'm married!" she yells. The tyrant prince just smiles, "I know, that's what's gonna make this more fun for us. By us, I mean me."

Cadance was still fighting and rubbing her belly as if she were feeling for something. Something alive, something moving. But there was nothing in there. "I know I am not crazy, I just want to know why I feel like this," she firmly and confidently said. She got so caught up with the moment that she totally forgot about her breast milk and big, tender tits and ass. "What are you going to do with me?" she asked, demanding an answer. Cadance said, as more and more gas filled the room, her body moving of its own accord. She got off of the bed and started shaking her ass like a tease and thought about serving and giving pleasure to this tyrant prince. "Master..." Cadance whispered to herself. Her mind became more lewd and more perverted than usual, and she tried looking away from him. She shook her head, somewhat snapped out of it. "What am I saying?" she asked. Lightning gave a smirk but kept silent .Lightning didn't have any romantic feeling for mares, but he did have one craving... Lust.

He watches Cadance twerk for a moment; when he sees her stopping herself, he says with confidence, "Oh Princess, I know you're trying to be strong, but the more you resist, the more your will is slipping away." He speaks firmly as he guides her onto the bed: "You want this, Cadance. I know you do." Then he uses his magic to rub her ass cheeks. Despite the lingering gas, she relishes his touch. Yet, she is simultaneously hoping this is a nightmare, that none of this is real. "This isn't real," Cadance said firmly, "Tell me I'm dreaming.... Luna!"

Lighning chuckled and placed his long length between her cheeks. "This is very real, Princess." He makes her grind against his length, rubbing against her pussy and asshole. The gas goes harshly into her system, sending her into high bliss. "Oh, you'll be an easy one to break. You'll also have bragging rights to my slaves to come," He says as he reaches over and smacks the cheek of her ass with his hoof. "You are the wife of Shining Armor, yet he has failed to satisfy you. That is why you are here." Cadance felt the heat and delight rise through her body weakening her defenses. How can anypony do this? I just can't believe it, yet the heat is driving me wild for him, the way he talks and his words, these. This isn't a dream, and the gas is making me horny. I need him. I can't believe I'm saying this, but I want him. Cadance thought to herself. He was absolutely right. Undoubtedly, she has been sexually frustrated. He had not fucked her at all, though he was married to her for years. He stopped grinding her ass on his length and used his magic to make her spread her legs. He spread her pussy and asshole to himself.

"You're mine. I'll break you in, and I will turn you into a true slut." Cadance's heart was racing.

"No, this is wrong!" She stated firmly. But already Lightning lifted up her right hind leg and was ready to shove his length in. His tip was already rubbing her wet pussy. She is unable to move. "You're going to enjoy it, princess." And without warning, he thrusts his whole length inside her, tearing her hymen. "Gah! So big, it hurts!" Cadance screams as she feels her innocence ripped away. Lightning adds "And don't think the royal sisters are coming to help you." He makes her look up and there are 2 portraits. One of Luna and one of Celestia, both completely immobilized. All Cadance can do is let out a gasp.

As soon as he was inside her, the gas went into full effect. The walls of her pussy clamped down onto his shaft. Her eyes rolled to the back of her head and she moaned loudly as the pain subsided almost instantly. "You like that, slut, don't you?" boomed Lightning. Her speech was impossible due to the overwhelming sensation that felt incredible. In short, the heat and pleasure from her pussy, the pain, subsided and slowly turned into a blissful sensation. Overwhelming, and her moans were louder than ever. When he began thrusting deeper into her marehood, she loudly and intensely moaned. He loved the sound of her moans, see how hanging her tongue out eyes roll to the back of her head. She would make a good slave. "You don't need Shining anymore. You'll never feel the same way about him again." The Tyrant said

She was lost in pleasure and bliss from his relentless assault. After an eternity, Lightning commanded, "Now, cum for me and be a good filly." Cadance squirts a large amount of pussy juice all over his length with that last statement. Then, he tells her, "Listen up, each thrust is going to make you squirt again and again until I cum in you." As he says that, he thrusts faster and harder, making her squirt at each thrust. Cadance moans and squirts while he pounds into her. "Keep going! Break me! Fuck me!" she yelled. The more Cadance yelled, the more he continued, faster and faster; the more she squirted. "Look who's got a dirty mouth now," Lightning laughed.

She was going crazy in her mind and her eyes rolled to the back of her head, Lightning then took her by surprise, filling her up and sending her to high heavens. He pulls his cock out and begun rubbing it against her asshole. "Now it's time making you a true slut," he told her, pushing his cockhead into her anal ring. "It's too big! I'll rip in two! Does your lust have no end!?" Cadance yelled, panting as her voice came across as defiant. "I can assure you that you will not. You were born for this. Time to break into this ass!" he growled and shoved his cock deep inside her rectum, tearing her insides. "It's tearing me in half! My gut is bulging!" Cadance's eyes were wide open and her tongue was lolling out, drool dripping from her mouth. Her mind was lost to the pleasure as her asshole clutched at his cock. She still squirted from his earlier command.

"Oh, yes! Cum for me, my little whore." He said as he pummeled her harder and faster for what felt like hours until he came, finally, with a final thrust. Lightening's cock expanded and he shot load after load of his seed deep into her rectum. Cadance felt his cock expand, and her stomach bulged from the sheer amount of seed. Cadance squirmed more than she ever had as he continued to cum. Her orgasm was lasting longer than she expected, the heat from the gas and his seed was getting to her. "Good filly, princess. "Now, I need you to say something for me." He commanded as he pulled out and rubbed his still hard cock against her cheek, smearing some of the seed on her fur.

Cadance was breathing heavily. She was coming down from her intense orgasm and struggling to catch her breath. "What do you want me to say?" She said, still catching her breath. "It's nothing really. Just Tell me you're a slut. My slave!" Lightning stated. "I'm not a slut," she stated. Lightning suddenly pushed his cock deep down her throat, shutting her off. She gagged on his length in surprise at the sudden action. Lightning forced her to deepthroat his whole cock, burying Cadance's nose in his groin fur. "Say it. You're a slut. You're my slave. Tell me." He commanded as he pulled out slightly. Cadance spoke up, her voice slightly hoarse from the act. "I'm a slut," she said confidently. "I'm your slave, and I love being fucked by you M-Master." Lightining smirks as her eye color glow a pinkish purple glow, he then looks to her cutie mark, which suddenly starts to glow in a dark manner and begins to change.

As it finished changing, her cutie mark changed from the crystal heart into the very same dark red crystal heart that Lightning corrupted earlier, with a lightning bolt, and his dark aura light up the heart. "Now that's a good slut. You are no longer the Princess of Love. You are my slave. You serve me, you obey me, and you will do everything I tell you, as The Princess of Lust." Lightning declared. He used his magic to pull her up. He held her aloft, her hooves wrapped around his neck. Then he laid her on him, his cock aligned with her pussy.

"Now, I give you a choice," Light said. "I am going to take you either your pussy or your ass. That is your choice." Cadance was resisting the metallic grasp of dominance and corruption. "Fuck me, Master. Fuck my pussy with that perfect
cock!" The old princess melted away, her place taken by a lusty mare prepared for anything her tyrant prince desired. "As you wish, my slave," he ordered. Cadance was in wild moans as he dug his length deep into her marehood, his tip pressed against her cervix. "Yes! More! Break me and fuck my tight marehood with that perfect cock!" Lightning continued to thrust hard and fast, making her cum and squirt, her juices running down to the floor. She screamed louder and louder, moaning, begging him to break her, ruin her.

Lightning continues to thrust harder and harder. "You're so tight, it's incredible," he said. He kept thrusting harder and harder until he broke open her cervix. "Oh yes! It's happening! I'm getting close!" Cadance let out a scream. Lightning smiled, continuing to thrust as his length slapped into her womb, her pussy juice dripping all over it; he knew he was close to orgasm. "You will take my seed and become a mother of my many umbrum foals. You are one of my worthy ones." Cadance couldn't take it anymore; she started orgasming again, harder than the last one. With one final push, she began squirting. The woman's pussy juice covered his groin. Her orgasm increased with each of his thrusts. "Oh yes, master, cum in me! Give me your seed!" Impregnate me! She screamed; eyes rolled back in her head. Lightning gave one final push and came hard. His cock expanded as he let loose a torrent of his warm, fertile seed deep into her womb. Cadance felt him fill her womb and knew, without doubt, this was how she was going to get pregnant, and that now her fate was sealed.

Lightning then casts a spell on her, and from her own shadow, there emerges another Cadance. "Why don't you two grind those asses on my dick," he instructed. "Yes, Master." They chorused in unison. Both Cadances align their flanks with Lightnings length confident in grinding their asses on his big length between their flank cheeks. They had their tongues out and eyes rolling as they slammed their asses down on his length, slapping, grinding, and sending themselves into a state of heavenly bliss as his girth rubbed against their pussies and assholes. They kept grinding their asses on his length, takin' him closer to orgasm. He could feel his orgasm approach and loved the sensation of both Cadances asses pressed against his length. While they do this, Lightning takes an orb and tosses it up; it becomes a globe showing that Twilight and her friends are going to the train station in Ponyville. "Excellent. They are finally heading to the empire. Soon, I'll deal with that Tree of Harmony." The orb returns to its default size and goes back to Lightning's hoof.

Then he returned his attention to his slave and her clone, who were still grinding their asses on his length. They enjoyed the length against the holes of their pussy and ass and were at the edge of a strong orgasm. Further, they kept grinding their asses, faster and faster, then finally, the Lightning felt an upcoming orgasm, and he came, covering the girls flanks with his warm seed. The two Cadances enjoyed feeling his seed on their flanks and continued to grind his length. "Oh, this new era is going to be a hell of a ride!" Lightning stated and grin.

And with that, The Princess of Love and the Protector of the Crystal Heart have been shattered.

Author's Note

So not the best smut i know, its my first smut, but I'm still learning as i go its all trial and error. This chapter is also a collab with my proofreader as the ideas was theirs BlackAlizebra as u may have read if u keep up with my blog post