Yang this time

You lumber over to Yang just as Ruby is almost done cleaning her sister up. Without warning, you **** the blonde's head into the carpet. As you kneel down next to her, you use your other hand to raise her ass to your level.

"Don't get ahead of yourself, ****," You growl into her ear.

As your dick rubs against her entrance, you can feel her pussy moisten at your words.

"Well?" she asks, "What are you waiting for?"

Something in you snaps. Behind your back and out of sight of your two slaves, you press a button on Yang's remote. As you slam into her vagina, your change reveals itself as the girl orgasms on the spot. Unbeknownst to her, you had increased the sensitivity of her womanhood by over 100 times. As you keep stroking in and out slowly, teasing her in the same way both she and Ruby had, you notice a growing wet spot forming beneath the two of you. You have no doubt it's from the massive amount of love juices now pouring out of Yang's pussy.

As you pick up the pace, Yang's moans quickly turn to gasps and soon after into tears. The orgasms are coming so rapidly and with such intensity that while at first, they were enjoyable, now Yang found herself in a hell of endless stimulation, unable to escape. Ruby watches in horror, but you can't help but notice the growing wet spot beneath her.

After a while, what's left of Yang's mind notices you are getting close. In an effort to escape her pleasure-hell, she begins to thrust back into you, doing her best to ignore her screaming pussy and finish you off. You smirk as you see through her move and pull yourself out of her drenched pussy. Yang, thinking you're done, takes a deep breath and sighs in relief. But the second you see her relax, you grab her wide hips and slam all the way into her pussy in one fluid motion.

It's too much. The orgasm that comes from that one stroke sends your blonde **** so far over the edge her entire body tightens. her pussy clamps down around you so hard that you can't help blow your load deep into your RoboSlut's womb. After five straight minutes of orgasm, Yang's muscles give out. Her pussy finally releases your cock and as you pull out, your cum pours out of her.

As you pull out your now flaccid cock, an idea forms in your mind. You look at Ruby, who has been watching you with a mix of fear and arousal.

"****."

The girl breaks herself free from her trance.

"Yes master?" she asks nervously.

"Bring me that bag," you say, pointing at the bag containing Yang's bondage gear.

Ruby does as she's told and brings you the bag. As rifle through it, you instruct her to flip her sister over and raise her hips. Ruby again does as you command.

From the bag, you remove a double-plugged chastity belt made of solid and unrelenting steel. From a casual glance, it appears to be well designed. There is a small opening in the front just over where the urethra would be, though why the manufacturer included such a thing for a chastity belt designed for a robot you had no idea. Additionally, the plug in the anus was hollow and could be opened to allow the wearer to... go about their business. Again you wondered why they would include such a thing, but you dismiss the concern quickly.

You bring the waistband together around Yang and lock it shut. Then you do the same with the genital plate, making sure the plugs are in her holes as far as they can go. That should teach her not to challenge you, but you figure why stop there?

You flip her over again and have Ruby hold her wrists together behind her back as you pull her arms into a very tight armbinder made of black leather. Finally, you remove an O-Ring gag and **** it into the blonde's mouth, along with the accompanying stopper.

With that, she is tied up. she'll have one hell of a time when she wakes up.

"Master?" you hear Ruby ask.

You look up at her.

"What now?"