First off, welcome back, got this chapter out much faster than the last one. In this specific chapter, one of the plot points is going to be heroin withdrawal, something I do not have personal experience in. I did research in order to present it as accurately as possible, but there may be some inaccuracies that slipped through. If that subject matter makes you uncomfortable, maybe skip this chapter, I'll summarize it at the start of the next.
Note that there is some conversation of what drives people to drug usage about halfway through. Note that drug usage is an incredibly complex issue, and the character giving those opinions does not necessarily represent my opinions on this matter. They have an ignorant viewpoint on this matter, and any real person should do actual research into the matter before coming to any conclusion, and fiction does not count.
I've also decided to start putting physical descriptions of the characters at the start of each chapter, both so that you, my readers, don't have to dig through old chapters to know what they look like, and so that I don't have to do the same. And finally, as always, the disclaimers. I do not condone any of the actions taken in this story, and in fact find them to be deplorable. This is a work of fiction, any similarities to real life events or people is purely coincidental.
Eric Alexis is a white male of average facial features, standing around 5'11, with an athletic, but not extremely muscled, build, short black hair, blue eyes, a nine inch long dick. He is a certifiable genius, with a (if your being nitpicky about it) literally impossible amount of achievements under his belt at 19, including a PHD in robotics engineering, and inventing the devices used in this story.
Trial Set 1, Ali, Mary's best friend and Eric's top slave is a 5'5, tanned Italian, with 30C breasts, toned waist developed through years of yoga, firm ass, sparkling emerald eyes, and brunette hair. In the first chapter, her hair was described as being held in a frankly ridiculous braid, which hid its length, but has since been modified to be a waist length pony tail.
Trial Set 2, Mary Alexis, who is Eric's sister, stands an even five feet tall, has acrobatic build gained from seven years of doing cheerleading and acrobatics, waist length scarlet red hair that she usually keeps braided back, blue eyes just like her brothers, 32DD breasts, and tight waist that swells out into a firm ass, followed by gorgeous toned legs.
Trial Set 3, Imae, the most recent addition to the cast, is a 20 year old 5'2 Japanese girl with dyed green hair in a pixie cut, and pale green eyes. Her breasts are slightly larger than b cup, a slight hourglass shape through her waist, and a small, but still firm, ass. She got disowned when her parents discovered she was pan, and willingly had the chip implanted.
Mary
Sitting in her room, bound, gagged, and blindfolded, Mary began coming down from the high of her massive orgasm. As her mind cleared, she began to question what the hell just happened. A few hours ago she was playing video games with her friend, and now she was tied up in her own room, calling that same friend 'Mistress.'
Slightly squirming, in an attempt to get more comfortable, she caused the leash she was wearing to rub against her cunt, and the ties around her breasts to tighten ever so slightly.
She figured she could probably shuffle around a bit, but if she tried, she would almost definitely fall over, and would have a lot of difficulty getting back up. Even if she did manage to move, where would she go? She was tied up in her own home, in her own room!
Once Ali came back she would need to tell her that this wouldn't happen again, that this was just a one off thing, that they would just go back to the way they were before. Yes, that was what she would do.
Except... Mary moaned as she thought about serving Ali the way she had. Just the thought of it made her wet all over again, let alone how Ali had left her. 'I mean,' she thought, 'Letting it go on just a bit longer couldn't hurt. Maybe it'll be fun to be a slave?'
Ali
As Ali got out of the shower, she smiled, thinking about her next move. It had been remarkably easy to get Mary submitting, and if she wanted to, she could probably put her through a rollercoaster of pleasure and pain, getting her to submit to Master, but Ali knew he was running an experiment, and figured that doing so would fuck it up.
She paused for a second upon realizing that she had just considered breaking the mind of her best friend in order to please a man who was essentially raping her, but brushed it off as par for the course.
As she dried herself off and brushed her hair, a chill ran down her side, and she debated whether or not to put clothes on, or just walk around naked for Mary's benefit. She ended up deciding that while she didn't want to overdo the power play, it would serve as a useful mix of normalcy and superiority for her to wear something.
She walked back into Mary's room, pulling out a red fishnet bodystocking dress that was barely opaque enough to cover her areolas, dipped just below her ass, and left her cunt almost visible.
Tossing her hair back, Ali walked back over to Mary, and lifted off the noise cancelation headphones. The bound girl perked up, but quickly stopped moving when the cord of her leash pushed into her cunt. Ali pulled off the makeshift blindfold, and then unclipped the gag, pulling the massive dildo out of Mary's throat.
"Good girl," Ali said, rubbing Mary's jaw before leaning down and planting a kiss on her lips. After a moment of apparent surprise, Mary began to kiss back. Reaching around behind Mary, Ali started undoing the knots keeping Mary's arms behind her back, and when she was done, Mary put her arms around Ali's neck, pulling her in tighter.
Ali kneeled on the ground, and undid the knots tying her legs, leaving the collar on her neck as the last bit of bondage on her. Pulling away at last, Ali asks, "How are you feeling?"
"Sore," Mary answered, laughing awkwardly. She glances down and sees the pool of juices directly beneath her pussy and flushes a deep red.
"Awwww," responded Ali, patting Mary's head with a smile, "Is someone embarrassed?"
Mary flushed even deep and looked away, saying, "Listen Ali-"
She was cut off when Ali put a finger in her cunt, rubbing her clit. Mary moaned, and fell against Ali, resting her head on the Italian girls breast.
"Yeah Mary?"
"Nothing..." Mary said with a soft moan, "I should go take a shower."
"Of course. Don't worry, I'll clean up," answered Ali, gesturing towards the pool on the ground, "But before you go," continued Ali, before removing the dog collar. Mary blushed again upon realizing she had almost left the collar on.
As Mary took a shower, Ali mopped up the floor, changed the sheets, and put all of their discarded clothes in the hamper. When Mary came back, Ali was lounging on her bed, arms behind her head, legs casually spread, giving Mary a nearly totally clear view of Ali's cunt.
"I don't really want to get dressed if I'm just gonna have to change again," said Mary, seeing that Ali was seemingly wet.
"Don't worry, we both just took showers, probably want to take our time before getting dirty again," Ali answered with a coy smile. She watched as Mary pulled out a sheer yellow lace bra, and matching panties.
After she put them on, Mary asked, "Do you know when my dickhead of a brother is gonna be back?"