"Thank you, sweetheart."

She twirled around, the blue silk of the dress fluttering around her. "Do you really think so?"

Her thick ass swayed back and forth as she walked over to me, the tight fabric of the costume emphasizing every curve. The sight of her in something so revealing was foreign, yet oddly familiar, a twisted echo of the feelings I had for the man at the store. "What do you think?" she asked, striking another pose.

"We will definitely win the best mother-son cosplay award," I said, trying to keep the tremor out of my voice as I took in the sight of her. The costume hugged her body in ways that were both shocking and arousing, and I couldn't help but feel a strange sense of pride and excitement.

My stepdad walks in, his eyes widening at the sight of my mother in the Chun-Li costume. "Well, well," he says, his voice thick with lust. "It seems like someone's been holding out on me."

She giggles nervously, her cheeks flushing a deep shade of red. "It's all for fun, right?" she asks, looking to me for reassurance.

I nod, trying to ignore the way my stepfather's eyes rove over her body, his lustful gaze making me squirm with discomfort. "Yeah, just for fun," I reply, my voice strained. "We are going to go to the comic con event this weekend sir. Do you want to join us?"

He strokes his chin, his eyes gleaming. "I might just have to," he says, his smile widening. "But first, I want a little... demonstration."

My stomach turns at the thought of what's to come, but I can't help the small spark of hope that flickers within me. If I can just get through this, maybe there's a chance for escape. I stand up, taking my mother's hand, and lead her to the center of the room. She looks at me with a mix of confusion and excitement, the costume already changing her demeanor.

"Alright," I say, trying to keep the tremor from my voice. "Let's do some poses."

He said "Wait Why don't you go put on your outfit too."

I nodded, my heart racing as I retreated to my room to don the green Cammy costume. The tight spandex clung to my body, accentuating my newfound curves and the bulge in my panties that I couldn't ignore. The thought of performing for my stepfather made bile rise in my throat, but I knew this was the price I had to pay for even the slightest hope of freedom.

I strike a pose in my mirror giving myself a once over. The tight green spandex hugged my newfound body, highlighting my slender waist and the swell of my hips. The plunging neckline of the top exposed my small but firm chest, while the thong bikini bottom did nothing to hide the bulge of my arousal. I took a deep breath, trying to calm my racing heart, and stepped out of my room.

My mother and stepfather were waiting in the living room, their eyes locked on me as I entered. My mother's gaze was filled with a mix of shock at the slutty outfit i was donning, and a hint of excitement, while my stepfather's was purely predatory. "Wow," she breathed, her hand coming up to cover her mouth. "You look so pretty."

"Thank you," I said, trying to ignore the way the spandex clung to my body, the way the fabric of the bikini top was stretched tight over my nipples. "Let's do this."

My stepfather's grin was predatory as he leaned back in his chair, his eyes devouring the sight of us in our costumes. "Perfect," he said, his voice dripping with anticipation. "Now, I want to see what you two can do."

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