The Cirilla Emporium - Giantess Cirilla - Step-Sis Slowly Shrinks into my Boyfriend's Dick

The Cirilla Emporium - Giantess Cirilla - Step-Sis Slowly Shrinks into my Boyfriend's Dick

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As my boyfriend and my step-sister, Cirilla, began to inch closer together on the sofa, it was clear that they were both experiencing some kind of intense attraction towards one another. I had warned my boyfriend about Cirilla's slutty ways earlier, but he seemed oblivious to it all. He wasn't used to such a glamorous step-sister like her, and it seemed that her constant attempts at seducing him were working.

Frustrated, I decided to take matters into my own hands. Cirilla was always vying for attention, so why not give her something she'd never forget? I went into the kitchen, grabbed a bottle of my boyfriend's cum, and mixed it with a powerful shrinking serum that I had been working on for years.

As I returned to the living room, I could hear Cirilla whispering sweet nothings to my boyfriend. Her dress was hiked up, revealing her smooth bare thighs. She must have sensed my presence because she turned around, smiled seductively, then turned back to my boyfriend.

With a devious grin, I slowly approached her. Cirilla was already unaware of my presence or intentions. I unscrewed the cap from the bottle of serum and poured some of it onto my fingers. As Cirilla continued to caress my boyfriend's exposed leg, I reached into the couch cushions to hide the small vial.

After a few minutes of their game, my boyfriend got up to stretch. Cirilla, who was lying down on the sofa, didn't notice the cushion moving. Her eyes were locked on my boyfriend's bulge. She knew what she wanted, but he wasn't going to make it easy for her.

As Cirilla watched in confusion, my boyfriend grabbed the remote control and paused the movie they were watching. He leaned in closely to her ear. "You want this?" he whispered, his breath hot against her earlobe. Cirilla couldn't believe what was happening but nodded eagerly.

Without further warning or hesitation, my boyfriend pulled his cock out of his pants and pressed it against Cirilla's lips. She opened her mouth in surprise, expecting him to use his hand instead. As their lips touched and their tongues danced, my boyfriend positioned himself at her entrance.

Slowly, he pushed inside her tight, warm cave. They were both moaning in pleasure as he began to fuck her mouth at a slow, steady rhythm. Meanwhile, I watched from the sidelines, pleased with myself for finally taking control of the situation.

After a few minutes of this, my boyfriend pulled out of Cirilla's mouth and sat down next to her. Cirilla looked up at him, expecting more and wondering what was taking so long. She didn't know that my boyfriend had just given her the shrinking serum that I had mixed into his cum.

As he watched, Cirilla's eyes widened in surprise. Her whole body started to tremble as she felt something strange happening. Her breasts had suddenly grown smaller, and her stomach was becoming flat. Cirilla tried to sit up but failed, realizing that her entire body was shrinking rapidly.

By now, she had shrunk to the size of a mini-girl. My boyfriend stared down at her, unsure of what to do next. I decided to take matters into my own hands. Grabbing a pillow from the couch, I told him to put it under her bare ass. As he did so, her head was now only two feet off the ground.

From this angle, he could see every inch of her small but perfectly formed body. Her tiny breasts, flat stomach, and the soft trail leading to her newly exposed pussy. As he began to stroke his cock in anticipation, Cirilla watched, helpless and aroused by the sight of herself getting fucked by my boyfriend in slow motion.

It didn't take long for him to line up his cock with her entrance. He pushed inside her slowly, enjoying the tight fit his massive cock made inside her tiny pussy. As he began to fuck her, Cirilla cried out in mixed pleasure and agony. She knew this was something she had never felt before, and it was both exciting and terrifying.

I watched them from the sidelines, mesmerized by the scene unfolding before me. The face of my boyfriend as he fucked my mini-step-sister was a sight that would be engraved into my memory forever. The satisfaction I felt from finally getting revenge on Cirilla was indescribable.

After a while, my boyfriend lifted Cirilla up and began to thrust into her more vigorously. Her small body jerked up and down with each thrust, her mouth wide open in a silent scream. It was clear to me that she was enjoying every second of it, despite the intense pain that came with it.

Suddenly, Cirilla's eyes rolled back into her head. Her entire body convulsed as she came, her minuscule orgasm causing her to shake uncontrollably. My boyfriend groaned in pleasure, feeling Cirilla's tight pussy pulse around his cock.

With one final thrust, my boyfriend ejaculated inside Cirilla. Her small body accepting every last drop of his cum. As he leaned forward, holding her lower back and upper thighs firmly, I watched as their mixed seed slowly leaked out of her miniature body.

After they had finally finished, my boyfriend collapsed onto the couch beside Cirilla, his breathing heavy. He looked at me, surprised but grateful for what I had done. Cirilla, on the other hand, glared at me with a mix of hatred and arousal.

I shook my head, imagining the faces they would make when they realized just how small their offspring would be. As I watched them recover from their intense experience, I couldn't help but feel a sense of satisfaction. It wasn't often that I got to see my boyfriend and step-sister enjoy each other like that.