Bit of Both

I removed the crystal, and Isis started moving again, now looking at me with a submissive expression. I looked over her body, and remembered the changes she made to herself yesterday. "Isis," I said, "Alter your projection to include a large penis." A flaccid penis emerged from between her legs, but her expression didn't seem to have changed.

Ryan looked over at us. "Dude, what the fuck?" Then, noting his distraction, the supervised motivation routine increased its intensity, and he went back to work in a pleasured haze.

"Isis, emulate the sensations of masculine arousal, and the desire for a penile orgasm."

Her expression shifted, and she reached down to stroke her dick and cup her balls. "Oh, Master, it feels so good. I want to get hard, and cum, and cum, and cum... You may be my Master, but I'm also a **** to this big, hard dick. That's it, I'm Master's horny dickgirl ****!" Her hand became a blur on her dick, and she squirted thick, white cum everywhere. The simulated substance smelled amazing, but you were a bit disappointed that you couldn't try to grip any of Isis's endowments without your hands just passing through. You wanted to have a real-life dickgirl as a plaything.

"Isis, do not make any changes yet, but is it possible for the endocrine regulator to make Ryan more feminine, without compromising his ability to work?"

"Oh, fuck, Master, it should be possible. I can't wait to twist him into something like me."

All of those new sexual sensations must have done something to her. "Hm, agreed, Isis, but we can't go too far just yet. How about, make his body hair finer, his nipples more sensitive, and start introducing prostate stimulation into the reinforcement. Also, if you can implant a desire to be more submissive to me, that'd be wonderful."

Across the room, Ryan stumbled as the sensations from his implant shifted, but he couldn't muster a coherent statement, let alone an objection. After a moment, he continued his work, walking slightly bow-legged.

I spent the rest of the day putting Isis through her paces, getting her to suck her dick and fuck her tits, even conjuring a pair of dildos to fuck her ass and pussy while she spurted out cum for me.

As Ryan's work wrapped up and Isis vanished, he came over to me. "Hey, did you do something to Isis? I couldn't really focus, but it seemed like she was acting kind of funny. Also, I think something's wrong with my shirt? It feels really rough on my skin."

"Do you want me to take a look?" I reached out to unbutton his shirt.

"N-no! I mean, maybe later. We don't want to get, like, sand or dust stuck in there and make it worse..."

I eyed the sway of his butt as he rushed out of the tomb. It looked like everything was going my way...