Self Punishment

Nebula swung the leather belt about in the air. It was new… not part of the armor given to her by Thanos… foreign… wrong…

Her doppelganger laid there, still no doubt concerned for her, thinking of her, so much like Gamora… infected by her weakness at some point in the future while she was still strong.

Nebula lashed her thigh with the belt and the sharp pain as it landed made her other self cry out in pain. Weak! Pathetic! But Nebula felt her own cunt throbbing at being able to draw such exquisite pain from the traitor, the sound of the belt hitting sending delicious shivers through all her body, even her cybernetic parts. The belt left a red mark on the doppelganger’s thigh and she liked the way it looked. Nebula swung again, lashing both her thighs this time. The other her screamed.

Gamora held as still as he could, listening for endless moments to one Nebula breathing hard and the other moaning in pain. She didn’t know what Nebula intended to do to herself—she didn’t think even Nebula knew—but she knew it would be humiliating, if not fatal. 

She bit her lip and clamped her thighs together, but she couldn’t stop her cunt from flaring up, demanding to be rubbed against the cajoling vibrations of the chastity belt that Thanos had put on her—the greatest temptation vibrating just barely between her lips, offering itself so close and yet impossible to reach.

Nebula happened to look at her before she could stop her own helpless acquiescence to her body’s demands. The future Nebula had mentioned Gamora’s treachery and Thanos had sought to remind Gamora of her place. What was worse, the current Nebula knew that was the only reason she was being allowed a position of dominance over her sister. To mock her.

“You like this, don’t you?” Nebula hissed. “Seeing me being punished… you’ve always liked it… but this time, I like it too!”

Almost moaning in shame, Gamora turned her face away, but she still couldn’t stop her hips from rolling against the chastity belt, trying to get it to fuck her instead of simply teasing her.

“Is that how she turned you?” Nebula demanded of her future self, grabbing her by the jaw and forcing her to look at Gamora. “Did she make you weak like her by letting her fuck you? You needn’t have bothered. You can see her get fucked all you want now. But you don’t get to just watch…”

Undoing the catch at her crotch, Nebula displayed her cunt. It’d been upgraded long ago, and now it had an option to allow her to interrogate prisoners most effectively. As Nebula’s eyes flickered back in her skull, a dildo pushed out from her groin, metallic and harsh. She forced it into the mouth of her own future self. 

Watching as Nebula sank that metal cock into her mouth, Gamora found herself now downright ramming herself against the chastity belt, finally getting its temptation partially into her sex, a measure of relief in the middle of her starvation. The current Nebula didn’t see, but the future one did. It was shameful, but she couldn’t help it.

In fact, it almost made it feel better.

“Can’t you tell that I want you to suck, bitch?” Nebula demanded, throwing her open hand across her future self’s face. The other Nebula was nearly knocked clear of the cock in her mouth; before she had a chance to recover, Nebula slapped her again. And again. Nebula was intent on showing her--and every rebellious urge in her body, past or present or future—who was in charge. Her doppelganger was going to serve her, serve Thanos with every ounce of strength in her body or Nebula would take her apart.

Gamora didn’t doubt how far Nebula would go to prove herself. Nebula was used to be pieced together by mechanics, and the idea of inflicting that fate on someone else didn’t have any affect on her thought process, except maybe a grim satisfaction in not being the one on the operating table. The brutal, almost sadistic glee in Nebula’s jet-black eyes sent a chill through Gamora’s blood, but also a tightness through her sex. She could see that Nebula wasn’t holding back as she bounced her future self’s body around like a ragdoll, making her thrash first one way and then another. Gamora almost envied her. Perhaps if Nebula were free to purge her system like this with Gamora, her sister, then… who knew?

Uncontrollable lust suddenly seized Gamora. She had teased herself for too long with the chastity belt, strained too hard for a pleasure she couldn’t really have, and now her cunt hurt more than anything else. But not enough to dissuade her.

Nebula finally noticed and she reached out with her foot, resting the toe against Gamora’s crotch, allowing her to work her hips forward and crush the chastity belt between Nebula’s boot and her own sodden groin. 

“Oh yes, it’s going to be you one day,” Nebula breathed, one hand working her future self’s head back and forth on her cock while the other ran obscenely through Nebula’s hair. “I’ll fuck your mouth too when you turn against Thanos. I’ll ruin your cunt… you’ll be good for nothing else but storing my prick!”

“I will never turn against Father!” Gamora swore, her lust mounting, raging all through her flesh, as she worked herself harder and harder against the vibrating chastity belt and Nebula’s boot holding it in place. 

“You want to be sisters so badly?” Nebula laughed humorlessly, before wrenching her cock from the other Nebula’s mouth and aiming it squarely at Gamora’s lips. “Be her sister. Help her suck. Maybe I won’t fuck her poor little ass so hard if you take my cock too.”