Sibling Revelry

Sometimes, it's amazing how over a long period of time, some things never change. While many things do change as time goes on, the siblings' love for each other did not waver or falter throughout the five years they'd been married. However, there was one thing that had changed. Twilight and Shiny had come clean to Cadance about their relationship, and now Twilight held the second key to her brother's chastity cage, and was free to unlock him whenever they hooked up.

It was a cold afternoon in November when Twilight received a letter from her parents asking her to housesit for them again, with the help of her older brother. Of course she accepted, not wanting to pass up the opportunity to see Shining Armor again. She hopped on the train to Canterlot as the day arrived.

Once more, she found herself wrapped snugly in her brother's arms, her tongue wrapping around his. The key to his cage dangled on a chain around her neck, but that would have to wait for later. That was the grand finale.

Twilight moved to the kitchen in the late afternoon. Since she was the better cook, it was only fitting that she do the cooking. She had put together an intimate, romantic feast. A Salisbury steak with a side of roasted cauliflower. Gone were the days where they would drink wine with dinner. Now they had raspberry tea, as it was better for them in the long run.

"It all looks delicious, my love," smiled Shining Armor as he sat down at the table. He had changed into his mother's dress in the interim, and he looked absolutely ravishing. He had learned how to apply makeup, as well; He accented his facial features with great skill.

"Well, it's a special occasion, darling," responded Twilight, giving him a quick kiss before joining him at the table. "After all, it's not often that we find ourselves alone in this house. This is where we first discovered our feelings for each other, so it's a very special place."

"I know, Twily. I love that we're together now. It's refreshing to know that, no matter what, I can always call on you for help."

"And I you." Twilight raised her glass. "Here's to us. May we never drift apart again."

With a chuckle, Shining Armor raised his glass as well. After dinner, Twilight changed into one of her father's suits. While she did so, she found out what Shining Armor had done while she was cooking dinner. The bedroom was filled with candles, and a record player sat in the corner, ready to fill the room with the sound of whatever music they chose. The final piece of this puzzle came with the pair of rings that their parents had left on the nightstand again.

The record player started up as Shiny entered the room and lit up the candles. A slow cello and lyre melody began to play. Taking her brother by the hand, Twilight pulled him in and began swaying gently from side to side. While she was the one leading, he was much larger than her, and couldn't rest his head on her chest unless he dropped to his knees. As that would make dancing difficult, he opted to stay upright and let her rest her head on his chest.

In the low light of the candles, they looked deeply into each others eyes. There was a shine reflected back at them that had the two siblings falling in love all over again. They shared another kiss, never missing a beat as their feet moved around each other. their fingers wove between each other as they clasped each others hands.

Their dance ended with the end of the record. It was just as well, as Shining Armor had been backed against the bed. Leaning back, he lay down on the mattress, spreading his legs to allow his sister access to whatever she wanted. Slipping off his panties, she admired his chastity cage. It was time to use the key. With a click, the lock popped open, and as the cage slipped off of his shaft, she clasped it in her hand. His balls were absolutely turgid with his pent-up semen.

One long lick was all he needed to become fully erect. Not wanting to set him off too early, Twilight removed her pants and boxers, climbing up on top of her brother's face. "Before you burst, I'm going to need lubrication." Mashing her pelvis against his jaw, Twilight could feel his tongue lapping hungrily at her pussy.

"It never ceases to amaze me how sweet you taste, Twily," gasped Shining Armor when his sister allowed him to come up for air.

"Well, I do tend to keep myself nice and clean for you." Now dripping, Twilight lined up her vaginal entrance with the head of her brother's penis and slid down onto his meaty rod. They had done this so much by now that she was able to take his entire length in one go.

Soon, the music had been replaced by the sound of their hips slapping together. Shining Armor had learned long ago to keep his hands to himself, rather than try to help his sister along. She knew what she was doing. He just had to sit back and try to last. That was the troublesome part of the cage. He would increase his volume by a wide margin, but he would lose his stamina. In his prime, he used to be able to last for over an hour, but nowadays, he would struggle to reach five minutes before blowing his load.

True to form, he didn't last particularly long. Thankfully for Twilight, he had already warmed her up with his tongue, so when he released a powerful torrent of baby batter into her waiting womb, she was already close. As her internal structure squeezed around him, he couldn't hold back the flood.

Not bothering to take him out, Twilight lay down on her brother's chest, giving his neck a gentle kiss. With a flap of her wings, the candles were all blown out, and the room fell into darkness. Shining Armor nuzzled his sister. Their love, while mostly hidden away, was an unstoppable force. They would always be together, no matter what happened in the future.

"I love you, Twily."

"I love you, too Shiny."