Chapter 1

It was Friday evening, which meant that the weekend was just around the corner. That meant two long glorious days of no more classes, no more homework, and no more school. Thomas couldn’t ask for anything better. It was a dream come true. Pure unadulterated relaxation, with hardly a single care in the world. Well, save for one other thing.

Sure, the weekends were the perfect time to lay back and relax, of waking up late and sleeping in, but besides just the peaceful calmness of lounging about on a Saturday morning with nothing to do, the singular red checkmark that ran down each row of his calendar marked something else just as important. Something that his parents had implemented ever since he first turned eighteen. And now, just six months later, it was hard to think of any other way his life could have turned out.

Because Fridays were release days, and thus the only chance he had of being unlocked from the chastity cage secured between his legs.

“Are you ready?” said his mother.

They were sitting at the kitchen table, him, his stepmother, and his stepsister Sarah. A bowl lay in front of the three of them, two small dice waiting within. One to six, the most common kind, and picking one up at random, Thomas made the first roll. Three dots in a diagonal, right in the middle. Scowling, Sarah picked up the second die and tossed it into the bowl as well.

Three and two, making five in total.

“Damn it!” she cried.

“Oh, right on the boundary,” said their mother, “Just one more and then-...”

“Mom!” cried Sarah.

“Alright, alright,” said their mother, “You don’t have to yell.”

It was a classic scene that took place every week at the kitchen table. And of course, even after all this time of being told not to, Sarah went ahead and did so anyways. For his own part, Thomas let out a sigh as he looked down at the dice in the bowl. It was hard to even tell what his sister was trying to complain about. Sure, it was still a five, but their mother wasn’t exactly wrong. And he had rolled a three, which meant that no matter what Sarah tried to do, the sum would have been at least a four or greater since the lowest she could have rolled was a one. Maybe she knew something he didn’t. Math had never been his strongest point.

He looked up towards the chart that was pinned to the wall. Two to twelve, with the entire range of possibilities split apart into four separate sections.

2 - 3: Handjob 4 - 5: Blowjob 6 - 10: Pussy 11 - 12: Ass Honestly, if he had just rolled one higher, and then ... The thought was soon interrupted though as the argument beside him rose to a pitch. Which might have been cause for alarm, had they not already been through this exact same situation at least a dozen different times before. As mentioned above, it really was something that took place nearly every single week. Every time the table was cleared after dinner and the bowl was taken out. He would roll the dice, sit there quietly, and wait for Sarah to finish arguing so that they could finally start.

“Now, Sarah,” said their mother.

“I don’t want to,” said Sarah.

“But he’s your brother-...,” said their mother.

“That doesn’t mean I have to suck his dick!” said Sarah.

Sparing a moment to glance at him from across the table, she crossed her arms stubbornly across her chest. Which might have looked somewhat intimidating, had it not perfectly framed the pitiful nature of her breasts. Even being older than him by a year, it was as if her growth spurt had been cut short halfway. Thus, besides the softly rising curves of her B-cup bra and the slightly wider diameter of her hips, their bodies were still more or less the same.

Not a single strand of hair for either of them, full shaven with the skin of their crotches made smooth and bare. Something that he was able to confirm for himself on a regular basis, considering the last two lines written down on the chart pinned to the wall behind him. Over which Sarah was once again making a scene.

“Sarah, you have to understand-...,” said their mother again.

“Nope!” said Sarah, “I’m not doing it.”

“But you-...,” said their mother.

“None, nada, I refuse,” said Sarah.

And then, as if the line hadn’t already been crossed.

“Besides,” she said, “It’s not like you can make me.”

There was a short pause as she smiled, and the room grew deathly still. Wincing, Thomas looked on in sympathy. That was most definitely not the right move to make. Bad decision, very bad decision. A prediction that came true a moment later as their mother finally lost her patience.

“Sarah Elizabeth Wilson,” she said, “Do you need another week with the training beads?”

Taken slightly aback, Sarah’s smile seemed to shrink a little across her face.

“Or how about the plug,” said their mother, “Because I can do that too. Turn the vibrations on low and tie your hands up to the bedframe so you can’t reach down underneath the sheets.”

“No, I-...,” said Sarah.

“Because you’re lucky I don’t,” she continued, “You’re lucky that you don’t have to wear a chastity belt while your brother does. As a girl, I trust you enough that you won’t go putting your hands where they shouldn’t be, but the Purity Center is only a thirty-minute drive away. I’m sure the doctors would be more than happy to take your measurements. Would you like me to set up an appointment?”

Sarah swallowed hard at the threat. For a while, the three of them sat there in silence as the question hung awkwardly in the air. The answer was quite obviously a no, but whether out of some last remaining sense of pride or perhaps even guilt, she didn’t seem quite willing to say it just yet. Maybe she was thinking that if she waited long enough, then the issue would just go away.

There was another pause as Thomas looked over at the two of them. and their mother sighed as Sarah finally gave in. Looking down towards the floor, she seemed to shrink down into her chair.

“Good, that’s what I thought,” said their mother, and then a moment later, more to herself, “Besides, I don’t even know what you’re trying to accomplish anyways since it’s not like you get to cum either until he does.”

Sarah blushed at that, unable to hide her reaction. With the formalities now out of the way though, it was finally time to begin. Their mother waved for them to get started, and standing up from the table, Thomas reached down to pull his shirt up over his head before undoing the button of his jeans. Sliding them down his legs, his underwear followed a moment later as tossed them aside. Fully nude, he shivered as he stood there with nothing to hide behind except the clear plastic shell of his chastity cage.

It was easier when he wasn’t the only one who had to undress. Besides him, Sarah was considerably slower. Her shirt came off, and then her bra as she laid it down onto her chair. Turning around so he couldn’t see her front, she carefully undid the zipper of her skirt before moving to slide her panties down to her knees. Lifting up each leg in turn, she carefully folded the garment in half as she placed it to the side.

As she did so, Thomas felt his member twitch ever so slightly as she bent over at the waist. With her legs spread ever so slightly apart, he could almost see the shape of her lips through the thin gap in between. A short glimpse was all he got through as she stood back up again in the next moment. Side by side, they waited in silence again as their mother held out a key.

“Now then,” said their mother, “Are you two ready?”

Thomas nodded, and with a click, the chastity cage fell away, leaving behind only the ring that went around the base. Instantly, he groaned as he felt his member spring up to its full length. One week, that was how long it had been since he had been locked up without relief. And the sight of his naked sister standing next to him didn’t do much to help his nerves.

Sarah, however, was less amused.

“If you cum in my mouth, I’m not swallowing,” she said.

Thomas nodded. That was fine with him. The only thing he really cared about at this point was getting it all out after having it build up inside him for an entire week. Of course, that was only on the condition that he was able to today, given the special conditions of his release. It was something that he had tried to protest against before, mostly to no end.

The rules were the rules though, and spreading his legs apart, he reached up to place his hands on top of his head. It was vital that he kept them there if he didn’t want to immediately be locked up again. Sarah knelt down in front of him, her face level with his crotch, and their mother set a timer as she signaled for them to begin.

“Go,” she said.

Thomas grit his teeth. Sixty seconds, that was all the time they had. Of which Sarah wasted at least three opening her mouth to take him in. Instantly, Thomas gasped as he felt the soft touch of her lips sink all the way down to the base. For a moment she looked up at him as she held herself there, and then as the texture of her tongue finally found his frenulum, the entire world seemed to fade away as it swirled around his tip.

Lick, lick, lick ... After an entire week of denial, it felt like pure bliss. Thomas closed his eyes, savoring the sensation as she slowly began to move her head. Despite Sarah’s initial reluctance, she quickly fell into a rhythm as she licked along the underside of his shaft. Up and down, up and down, each one of her movements seemed to last for an eternity as it pushed him closer and closer to the edge. Already painfully erect, it wasn’t long before he was already a third of the way there.

Of course, the challenge was still getting there before the timer rang. Her tongue swiped across the tip again, and Thomas moaned as he started to count down inside his head. One last lick as she started to suck, and he almost lost control of himself as his legs started to shake.