Disclaimer: I do not own Avengers: Age of Ultron or anything to do with Marvel. I do not make any money from the writing of this story.
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Natasha Romanoff and Wanda Maximoff hadn't spoken since Natasha popped Wanda's anal cherry. That wasn't surprising. What was surprising was that Wanda didn't returned to the nervous slip of a girl that first joined The Avengers who only left her room to collect food or when there was a mission or a training session.
No, she had dinner and then breakfast with the rest of The Avengers, most of whom managed to make it for both meals, which was unusual. Wanda even sat directly across from Natasha at breakfast and gave her a few knowing smiles. This was both a good thing, and the bad thing.
Honestly Natasha was expecting Wanda to retreat into her shell and become afraid of her again. Which made her actions even more selfish, but Natasha was confident that she could regain Wanda's trust and train her to be a half decent member of the team, even if her powers were taken from her.
Now she feared the girl was developing a crush on her, and thought what they had done yesterday meant more than what it did. Luckily they had a scheduled training session from the morning, and given how bold Wanda had been acting since Natasha took her anal virginity Natasha was confident that she would show.
Sure enough Natasha actually found Wanda waiting for her with a wicked smile, which might have scared others but not The Black Widow, "Are you ready for your training session?"
Still smiling Wanda replied in her usual broken English, "I wonder, what is it you wish to teach me today? Combat? Escape technique? Seduction?"
"Perhaps we should work on convincing accents." Natasha quipped, before adding, "But perhaps I should ask you what you want to do today?"
Wanda look thoughtful for a second, and then almost casually said, "I wish to fuck you in the ass."
For a moment Natasha just blinked, stunned into complete silence by this girl's boldness, and then she just smirked, "Is that right?"
Arrogantly stepping forward Wanda confirmed, "That is right."
There was another pause and then Natasha softly laughed in the girl's face, "That's really cute, but better women than you have tried."
"Are you sure of that?" Wanda asked, her eyes going red. Instantly Natasha felt herself go rigid, and then as much as she tried to resist Natasha found herself dropping to her knees, which in turn made Wanda smirk wickedly, "You forget, I have seen inside your mind. I know what it is you really want. What you thought about last night."
For maybe the first time in her life Natasha genuinely blushed, "Do you?"
"Yes." Wanda said confidently, stepping even closer, "You wish to be dominated by a superior woman."
"Is that what you are?" Natasha questioned, "Superior?"
"To you? Yes." Wanda replied.
Natasha gulped, realising she could be in real trouble here, and shot back, "Without your powers, you wouldn't stand a chance against me."
"Perhaps." Wanda conceded, before leaning down so they were practically face to face, "But with them, you are my bitch. Which is what you truly want, isn't it? Why you came so hard thinking about me getting some revenge for yesterday and dominating you. And I wish to make your dreams come true, partly to thank you for teaching me so many wonderful things, and partly because I just wish to make you mine and fuck that big sexy ass of yours. You like that, huh? Someone daring to tell The Black Widow to her face that her ass is big, round and fuck-able? That they are going to pound that big fat ass so hard your juicy cheeks jiggle like jelly, and your ass hole will gape open in a sign that you were used like a little bitch? That first they're going to cum all over your pretty face. That is what you want, is it not?"
There was another long silence and then Natasha softly murmured, "Wanda, I... I..."
"Or perhaps I am wrong." Wanda said, straightening up, turning and walking away, "Perhaps you wish to be left alone to think about it for a few hours."
"Wait!" Natasha cried out, blushing again as Wanda turned round and looked at her expectedly, then after a brief pause admitting, "I, I want it."
Taking a few steps closer to her prey Wanda asked, "And what is that?"
"For, for you to dominate me." Natasha forced herself to admit.
Again stepping forward Wanda smirked, "You can do better."
Natasha gritted her teeth and pleaded, "Make me your bitch."
"What's the magic word?" Wanda sings-songed as she moved even closer.
"Please." Natasha whined, "Please make me your bitch. Fuck me in the ass and make me your bitch!"