I awoke probably an hour later, naked and curled into the fetal position.
I spread out and looked at my cage, tugging at different parts to see if I could break it off, not a chance, the thing was made from solid metal and had a giant lock.
The worse part was my throbbing cock, I was turned on and I didn’t know why, this was my worst nightmare come true but the bright red swollen head of my cock said otherwise
“Oh James, what panties do you think look better?” Ava said as she walked into my room, completely naked.
my jaw dropped for a second as I saw her body, I instantly grew hard and felt the punishment, I screamed in pain as the head still tried to throb but the shaft could not grow without being stabbed with spikes.
“You see, these ones make my butt look bigger” she said, putting them on seductively before spinning around to let me see, in an instant she dropped them and began to put the other pair on “whereas these look sexier overall, the silk and lace combo really makes me look sophisticated”
“What do you think” she asked, giving me an innocent smile
“Uhh, the uhh the first ones” I said through gasps and grunts, my cock head threatening to split open at any given moment
“What the matter ja…Oh I’m sorry, I completely forgot about the whole cock lock thing” she said, giving me a smile and walking over
“Am I giving you a hard time” Ava said, getting herself at head level with the device and inspecting it, all the time giving an amazing view of her tits as she looked at my throbbing cock hungrily” I did everything in my power to not get a boner, but it didn’t work, I felt another excruciating pain shoot down my shaft, my Precum oozing out of the tip of my swollen cock.
“Oh James, your leaking” she followed, taking her mouth to my cock and sucking off the precum through my chastity device. I couldn’t control my urges any more and felt another spurt of precum shoot out, right onto her cheek
“Wow, I never thought cum could taste so good, I don’t know if I can hold off any longer, I might have to just unlock you and suck that little cock right now, let me get the key” she said.
I eagerly waited, my cock getting hard but I couldn’t care less, I would be free and I would get a blowjob, this was the best day of my life
“Hmm, actually no, I don’t want to unlock you just yet” Ava said as she walked back into the room, the key resting on her cleavage as a necklace
“I’ll cut you a deal though, I’m going to keep that little juicy cock locked up for 6 days, today being the first of those days, and if you do everything I say within the 6 days, I’ll unlock your cock and let you do anything you want to me, do we have a deal?”
“Yes Ava, Yes I accept” I said, it was torture but just the thought of cunning in that beautiful ass was enough persuasion
I felt a massive pain, a stronger pain than ever before, she had planted her foot right into my balls
“Tut tut tut, I told you earlier that you must call my mistress, for that I’m going to add another day, so 7 days starting today until you can do whatever you want with me”
“Yes mistress” I said feebly, my cock on the verge of exploding but being unable to
Day 1:
“Oh James!” Ava called from her room, I sheepishly walked over to her, wearing just the panties she had given me and my chastity device
“Yes mistress” I said in a cold, defeated tone
“I have a date tonight, I’m going to be going back to his house so he can fuck my ass and I was hoping to get some practise in, I need your help” Ava said, she was wearing a white tank top which did nothing to cover her tits up and nothing else
“Yes mistress, how can I help?” I said, my cock throbbing, was she really going to let me fuck her ass there and then?
“So, I want you to get my vibrator from the top drawer over there”
I shrunk down, how could I be so stupid, I walked over the drawer and found a ton of sex toys, I picked what I believed to be the most appropriate and took it back to her
“What the fuck are you doing?” Ava asked, looking at the toy in disgust
“My date doesn’t have a shrimp dick like you, he has a real cock, it’s 10 inches you know? Get me the black one on the far right”. “NOW!”
I quickly obeyed, fearful of any more days in chastity
She snatched the vibrator from my hands and began to suck on it, getting it ready for her ass
“Tell me how much you want to fuck me, tell me how badly you want to do everything to me James” Ava said, winking as me as she deep throated her toy.
“Yes mistress, I want to put my cock in your ass, I want to grope your tit…ARGGGGGHH” I screamed, I had gotten lost in the moment and the head of my cock had been forced directly into the spikes at the tip of my device, the whole thing sticky in my precum but my cock was in agony
“Did I Tell you stop bitch?” Ava screamed, beginning to stand up
“No mistress I’m sorry, it will not happen again, if it does you can keep me locked up for a month” I quickly said, anything to get her to lay off me
“Damn right it won’t, now get back to work” she demanded, the whole time she was thrusting the dildo in and out of her ass whilst flicking her clit with her other hand
“I want to grope your tits -I winced in pain, getting hard again- and make out with you as I force my whole cock into your ass” the pain was unbearable but I used all of my strength to make sure I didn’t stop
“And when I’m ready to cum, I want to pull my cock out and then get you to suck on my balls” I took a second to look down at them, they had swollen so much since this whole thing started, they were each the size of a lemon now, both filled with my cum and waiting for a release. “And you can suck them as hard as you can, until I tell you I’m ready and shove my cock in your mouth, and whilst it’s in your mouth you can milk my balls with both of your hands, not stopping until they are completely empty”
“Oh fuck James that was really really hot, and I think I’m ready” Ava said, sliding the entire 12 inch long and 2 inch thick dildo from her ass
She hopped up and kissed my cheek “as a reward, you can lick that clean and put it away, but just remember, if you even thing of getting an erection, it will stab that sissy cock of yours with lots and lots of little spikes, but anyways, get to work, I’m going to get ready for my date” she said, not caring to cover up as saliva dripped from her ass
I got to work on the dildo, licking up and down it, it tasted amazing, my cock throbbing the whole time and having to take brakes so I didn’t get a boner but it was worth it, when I had finished I turned around, Ava was wearing a dress made from sequins, it was ridiculously low cut and it it was any lower, her boobs would be completely on display, one of her nipples was already poking out, as my eyes traveled further down I was shocked, the dress was more like a t-shirt, I could see some stray public hairs emerging from the bottom of it, she clearly wasn’t wearing any panties
“Go on then spin around for me mistress” I managed to say, keeping my cock from committing suicide
She span around and what I saw was jaw dropping, half of her ass cheeks hung out the bottom of the dress
“What’s really funny, it that the guy in the store said it was a novelty thing, he said that it’s for girls with a rape kink and they can be a little slut and wear this for their husbands, but I know he was wrong, I can wear this as a normal dress” Ava said, spraying her tits with some perfume
“Well, thanks for cleaning my dildo, you can go back to doing what you want now, I’m going clubbing and then I want to get my ass filled with a bbc” Ava said, kissing me on the cheek and patting my Chastity device before walking out the door, one of her breasts had already fallen out of the dress
That’s it for part 2 folks, hope you enjoyed, I will try to post the next part tomorrow
Source: reddit.com/r/eroticliterature/comments/bj2400/step_sister_catches_me_chastity_part_2