Death By Snu Snu!

Twilight took a sharp breath in as she heard the sound of hooves coming up the stairs. It should have been only one set, but there was too much noise for that, and the young mare smiled as she felt one of her enchantments go off. As the two tried to shush each other, Twilight felt a new sense of weight on her hooves, as if she was standing.

It was a bit disorienting, but also very exciting. She took in a shuddering breath, and looked straight to the ceiling as she reflected on exactly what it was that she planned to do, and how it came to be.

First she had to go to the notion that she still had to be babysat, even if she was thirteen. Otherwise, Shining might have gotten to go to the show with their parents. Instead, he was stuck at home, and had spent the whole night pretending to be annoyed, before pushing her to bed. She wasn’t anywhere near tired though, especially as she’d listened to Shining make his calls.

A shudder ran through Twilight’s body as she felt something touch her flank. It would be Cadance’s flank, of course, being touched, but she got every bit of the sensation too. All part of the plan.

This wasn’t the first time Shining had used their parent’s date night as a chance to be with Cadance. At first, it was simply a way for them to have a date night too, and she would be allowed to stay with them. As they started to deepen their relationship though, she was sent to bed earlier and earlier. And, consequently, she would sneak out earlier and earlier.

Twilight’s magic flared, and her mouth was forced open. While she did not have to be doing exactly what Cadance was doing, she did have to be in some way able to receive the attention she got from her brother. For this one, it was to be able to feel her brother’s tongue wrap around hers. Taste his spit as the embraced closely. She even felt a shiver run up her spine as she figured out that Shining had to be laying on top of Cadance, if not just from the behemoth that pressed against her barrel.

She had seen the position almost have a dozen times now. Shining would climb over Cadance, give her a brief kiss, and then they would talk for a little bit. Sometimes, it was sweet nothings as Twilight’s hoof mercilessly teased herself as she stared at her brother, while other times, it would be Cadance complaining about the rushed feeling. Twilight never understood why she complained though. She was with the greatest stallion in Equestria, so she should be happy for any time with him.

Just like Twilight was about to as she felt his large, throbbing member press against her lower lips. She would adore the next two minutes for every second they were worth. Not that that was due to the spell’s limitations, but due to her brother’s amazing stamina. It had to be at least, as she usually didn’t last so long at just the thought of her brother.

Twilight’s horn flared as both sets of her lips parted. It was another prepped enchantment, this time to make sure the two lovers didn’t know anything, as otherwise, she would be screaming in ecstasy. Shining was definitely big, way too big for a small, virgin mare like Twilight. But she felt none of the pain.

She only felt whole again.

The nights where he was with friends, or Cadance, the days at a time that he went to guard training, or even the hours when he just couldn’t hang out with her, all melted away. She was one with him again, and didn’t even feel it as if through an enchantment. As each thrust from the powerful stallion threatened to break her hips, she saw Shining there.

Twilight felt her throat go raw as she let out another silenced scream as her second orgasm ripped through her body in maybe thirty seconds. She knew she had a problem, a major problem. She’d had it for a long time too, and had made sure to maintain an air of pure innocence, just so when she nuzzled against his cock, rather than his barrel, Shining wouldn’t realize what it was she was doing.

Yes, she was a broken mare, but who else could she want than her BBBFF? Who else would any mare want?

Twilight stopped as she got a break from Shining’s next thrust. He usually had to break during the middle of it, something Cadance usually enjoyed too, especially whenever their lips clasped during it like tonight, or else he wouldn’t last the whole two minutes. While Twilight was given the time, drunk on the kiss, she gave her question some thought, and couldn’t help but giggle a little bit. Maybe one of these days she should give her dear old dad a chance. He was the only other stallion she’d ever known after all, and had many of the things Shining had.

She couldn’t dwell on the thoughts though, not as the next, heavy thrust slammed into her. She could feel the heat and passion from Cadance ripple through her, and she almost blacked out as her body spasmed. It was the most intense moment of Twilight’s young life, the feeling of not only her own orgasm, but that of an older, more experienced mare, as she could also hear Cadance’s scream from the other room. It was so powerful that Twilight almost blacked out from the pleasure and fury of it all.

For the next half minute, this was Twilight’s world. Slow, powerful thrusts from Shining as he grunted, with a soft heat stoking her own from Cadance. Her mind was almost off already, but she didn’t dare allow her mind to turn off. She had to be alert and ready for what was to come. For that glorious, final moment.

And then, it came. The only warning was the extra time Shining spent pulling out, before her stomach bulged with every last inch of him. She could feel the warmth flooding her belly, and for a moment, hated Cadance. She got to experience this every week, be filled with his seed, and given a chance to have the child Twilight wanted, and she killed that chance with spells. It didn’t last long though, as soon the pleasure and spasms overtook it.

She placed a hand on her barrel as Shining pulled out, and laid back. Her body was still quaking, unable to shake the violent orgasms of before, or the heat that still flooded her being.

She was content for the night, and just like any other, slinked away from it all then. She would be in bed most nights in another few moments, happy with the show, and expecting them to go to bed. Besides, how could anypony go on after such intensity and euphoria?

And then she tasted Shining’s cum. Her eyes shot open as every part of her mind tried to figure out what was going on. All she did know was that she was getting something put in her mouth. Something that matched the shape, and heat, of Shining’s cock, and had an oddly salty taste as her tongue ran over it, scooping up some sort of goop from it’s side.

The young mare, while well versed in what sex looked like, didn’t know what a blowjob was, but was instantly in love with the idea. She let out a silenced moan as his cock slid down her throat. It was still big, and felt tight against her trachea, but a bit of even breathing, and she could simply shiver as she was treated to Cadance’s favorite part of the night.

She chose the speed, got to show her stud of a stallion, who so often had to bow to her, spent so much time showing his own affection, and even risked being chewed out by his parents, something she would not do with her aunt, the fact that she was still able to be beneath him. Still willing to do something this crude for him. And, since she got good at it, would shudder as his whole girth filled her throat, a size higher than Twilight’s, and would then wait.

Because she loved the feeling of it growing.

Twilight did too, her whole body shuddering as it swelled. It was simply so big, so warm, and pushed everything down. She could sense that Cadance smelled something, and went to take a breath in. Something about the breath was wrong though, but Twilight’s mind was so tired. It was used to going to bed after all of this, and now that it wasn’t getting any more air, it was becoming even harder.

Twilight’s eyes widened as she realized what the last part of her thought meant, before letting her eyes drop. She was too tired, and she enjoyed this too much, especially now that Cadance began to bob her head. She never went far though, loving the size of his cock. Just far enough to let herself breath.

Which, for the still body of Twilight, was about three inches too little. Not that Twilight minded. She agreed with Cadance, and adored the size. Adored every bump and ridge as it forced her trachea shut. Adored every last taste, even as other parts of her body went numb. She even got to have one last chuckle as her spell began to collapse. With all the blackness, and cold, she could at least finally get the rest that her body and mind were demanding.

On top of that, even while knowing her fate, at least she was able to be with him once, and so still had a smile on her face, and would be found like that in the morning. Still, but happy, and coated in the juices of her sin as she laid upon the sheets of her own bed. Presumed to have passed away alone, she would have objected a hundred times over, and tell them that she died doing what she loved, before giggling away into another part of the afterlife.