Step sister catches me [chastity] [MF] (Part 1)

It was late Saturday night when it all started, I thought I was home alone and my cock had been rock hard for hours, I needed a release so I thought I’d do what I always do.

I quietly went to my stepsister, Ava’s room and went through her laundry hamper, pulling out a pair of dirty panties and holding them to my nose, I close my eyes and began to ferociously jerk off, thinking of her thick juicy ass in the panties I was sniffing. I was close to Cumming when I heard her

“What the fuck are you doing” she squealed, she had been in the bathroom and upon seeing me, dropped her towel out of shock, I could see her beautiful tits bouncing as she tried to recover, that’s when she ran over, forcing her knee into my balls as hard as she could and simultaneously smacking me across the face

I broke down into tears, running back into my room and jumping into bed.

I am overwhelmed at this point and out of the emotional exhaustion, I fall asleep

I awake the next morning to something very unusual, I sense a presence in my bed and when I turn around I see her

“Hello James” she says, she was under the covers with me so I could only see her face

It took me a second to remember what happened last night

“So you like sniffing my panties?” She asks, pulling the covers back to reveal her wearing the same panties that I had used the night before, but nothing else, I was turned on by this but with all the emotions running through me at this point in time, I could only think of fear

“I’m sorry Ava, I’m really really fucking sorry, I will pay you anything as long as you don’t tell mom or dad” I say, on the verge of crying now

“Oh I don’t care about that, why don’t you have the real thing” she says, standing up and standing over me, giving a perfect view of camel toe and ass

It’s then that I feel the sting, a terrible terrible sting in my crotch

“Ahhh fuck” I scream, ripping the covered away, the sight I saw was horrifying, I felt as if I’d just been shot

“Oh about that” Ava said with a giggle

“That is mike’s my ex’s do you remember?”

“Well I loved to keep his cock locked up to make sure he wasn’t out cheating with other girls, I thought I could do the same to you, so you wouldn’t feel the need to jack off in my panties” she followed

I let out a wince, the device was full metal and was already bruising my cock, it stung so badly and my erection was fighting a losing battle

“Now, Mike’s cock was much bigger than yours, you have a little sissy cock, so it’s not as bad as it could be” Ava said, walking over to my crotch and pushing down on it with her foot, causing me to let out another cry of pain

“So, let’s lay out the ground rules shall we?” She said in a playful and childish tone, jumping up and down on the bed”

“So, you are to do all my chores, you are to cover for me when I go out on my tinder dates, you need to watch me take a shower every day so that you can train yourself not to get hard” Ava said, jumping off the bed and looking at me “and I will let you know of all the other ones that I come up with”

“Does that sounds like a good deal?” She asks

“Yes Ava” I whisper through the pain

“Oh and that reminds me…you are to call me mistress from now on”

“Yes mistress” I say before I curl into a ball and cry, my cock still throbbing

That’s all for part one folks, let me know what you thought and if it gets enough positive attention I will start this as a full blown series, I have a lot of ideas for where this can lead

Thanks for any feedback in advance

Source: reddit.com/r/eroticliterature/comments/big31u/step_sister_catches_me_chastity_mf_part_1