She yelped loudly as he pinched her nipples.
The hormone therapy she had been using had made her breasts really pronounced, even for her 18C breasts, that and, they were always so hyper sensitive now. She could feel his hand then rest between her breasts and slowly, agonizingly trail down her tummy, over her belly button and slipped ever so slowly under her tights.
"You have been a very good girl. Would you like your reward now?" he asked as he watched her tremble. He didn't have to ask, he knew she was excited. He watched her mouth closely. His hand slipped under her tights, and just as she said yes, his hand gently grabbed the hidden treasure under her tights, gently grabbed her cock, grinning as she said "yes...siiiirrrr" watching as she moaned the word "sir" loudly.
He hadn't failed to notice, try as she might, he could tell she was aroused when he opened his door to her, and once she had taken her dress off, he had noticed her erection, even when she was blindfolded and tied down. "Good" he thought.
He had a gentle but firm grip on her hard cock, he was surprised, it was pulsing, a lot. He looked at her chest and could see it rising and falling rapidly. She was about to orgasm. He knew it, and the lack of breath she had and the sensations she was feeling, she knew it too.
Holding her cock gently, his hand under her tights, it keeping her cock hidden, he leaned into her ear and whispered "do you want to cum, Slut?" She was nodding a lot as she begged "yes sir! Please let this slut cum!"
He pulled off the blindfold and at the same time squeezed down on her cock with his fingers was all it took. She cried out loudly, moaning and as he tied body wriggled, she opened her eyes mid orgasm, and looked up at the roof...at herself! Attached to the roof was a giant mirror positioned right above her, she watched her self writhe in mid orgasm, which only made it last longer. She didn't even notice him anymore, she could see him but didn't pay any attention, and her orgasm was so big.
After a minute she finally came down from her orgasm, not taking her eyes off her lewd display for one second. She then looked in the mirror to see her tights where her cock is were totally soaked in her cum. His hand was still holding her cock and between that and her cum, she was in heaven. She watched with her wide blue eyes as her cock was stroked again under her tights, she was still hard and it felt amazing.
"Oh god that feels good sir", "please don't stop sir" or the one he liked hearing the most "make this slut cum again, this slut needs to cum" she kept saying. She was totally memorized. He watched her moan and gasp again as she came for the second time into her tights again.
Her entire crotch was soaked through, and the room was quickly filling with the scent of her cum. It had such a sweet smell to it, he just managed to catch a glimpse of her licking her lips. "Cute slut" he thought.
He felt her start to soften slightly, and his hand was cramping a little so he withdrew his hand from her tights, it was still wet and covered in cum. He wiped his hand from one of her breasts to the other, smiling as she couldn't help but moan as he breasts were touch, her nipples becoming erect once again. Once he'd wiped his hand clean of her cum, he moved his other hand down under her tights and grabbed her cock again, and noticed it was hard again.
"my, aren't you the most excited little bitch around" he gloated "ye...OW" she cried as mid-sentence he pinched her nipple hard with his free hand. "I didn't ask u a question slut" he said. Funny though, her cock was throbbing again "oh, so you do get off on pain too you nasty slut" he said as he pinched her other nipple hard. And here she was still throbbing, she was close! Again? My, this girl was something else.
He removed his hand from her tights and she whined loudly "please let me cum sir! Pleeeaseee" she was begging. "Cum then you worthless slave" he said to her. He watched as the whole time, she had never taken her eyes off the mirror, she watched herself and as I reached with both hands and pinched both her nipples very hard at the same time, she came again!
He could hear just above her loud moans of orgasm, he could hear her cock release into her wet tights for the third time. He let go of her nipples just as her orgasm subsided. "Please sir, no more. I can't cum anymore. My cock hurts sir!" she whined loudly. He looked over her bound body, she was sweating from the orgasms she has had. She looked very beautiful. It was amazing that she didn't have a boyfriend or a girlfriend.
"Please, let me go, you've tortured me enough sir" she pleaded; she hoped he would listen, she felt exhausted. He grabbed her nipple with one hand and kept pulling up and up until it slipped painfully out of his fingertips. The cries he heard coming from her were very sweet, her body seems so responsive to pain and stimulation. He wished he could keep her forever but his time with her was almost up, so he calmly said to her, noting she still never made eye contact with him, her eyes were still glued to her image in the mirror "cum one more time slut and I will set you free" but the moment he finished, he watched her for a moment.
"Your already close to orgasm again aren't you!" He watched her nod her head furiously, her breathing becoming rapid again.
He moves his hand and pushes gently down on her soaked tights covered cock, she moans loudly, she's about to cum again so he moves away and watches her whimper and writhe around, trying to push herself over the edge. After a minute he steps back and pushes down on her cock again, her breathing gets very rapid, he steps away again. She groans in frustration, tugging at her wrists, trying to get free, she really needs to cum, he can see.
He steps back up next to her again; she's still, watching herself in the mirror.
SMACK! Her eyes go wide, before she realizes what's happened, she's already started to orgasm, and loudly too. He watches her thrash around in her bindings. It has the desired effect, and he knew this would be the only way she would cum from now on, was when she was in pain. If she wasn't in pain, she wouldn't be able to cum hard like this, especially since he had made her cum so easily, just by raising his hand and slapping it flat on her cock, as if he was spanking her ass. It only took one hit and she has given in and cum.
He watched. She tried her best, but she couldn't keep watching herself in the mirror for long this time. Her eyes rolled back into her head as she was Cumming, filling her already soaked tights with more of her cum. Eventually, she fainted, her body went limp and her moans stopped, but he watched for a few more seconds, noticing her body every so often trembled, ever so slightly, he knew even though she had fainted, she was still in mid orgasm.