I never thought I'd find myself in this position, but here I am, standing outside my sister's office door, my heart pounding like a drum. The hallway is eerily quiet, the only sound the faint hum of the fluorescent lights overhead. I glance at my watch—8:45 PM. Everyone else has long since gone home, leaving the corporate jungle deserted. But not for me. Not tonight.

"Come on in, Jake," a voice calls from inside, breaking the silence. It's her voice, smooth and confident, laced with a hint of amusement. My sister, Emily, always had a way of making me feel both seen and utterly exposed.

Taking a deep breath, I push the door open and step inside. The office is dimly lit, the soft glow of desk lamps casting shadows across the room. Emily sits behind her massive oak desk, her legs crossed elegantly, a knowing smile playing on her lips. She's dressed in a sleek black pencil skirt and a white blouse that clings to her curves just right. Her dark hair cascades over her shoulders, framing her face perfectly. She looks every bit the powerful executive she is, and yet, there's something different tonight. Something dangerous.

"Close the door, Jake," she commands, her tone leaving no room for argument. I do as she says, the click of the latch echoing through the room. "Now, come here."

I hesitate for a moment, my mind racing with a thousand thoughts. What the hell am I doing? This is my sister, for God's sake. But the look in her eyes—a mix of dominance and desire—pulls me forward like a magnet. I walk around the desk, my footsteps heavy on the plush carpet.

"That's it," she purrs, leaning back in her chair. "You look so nervous, little brother. Why is that?"

"I don't know what you want from me, Emily," I admit, my voice barely above a whisper.

She chuckles softly, a sound that sends shivers down my spine. "Oh, Jake. You really have no idea, do you?" She reaches into the top drawer of her desk and pulls out a small, velvet box. My heart skips a beat as she opens it, revealing a set of shiny metal cuffs. "Tonight, you're going to learn exactly what I want."

Before I can react, she stands up and circles around the desk, her heels clicking against the floor. She stops in front of me, her eyes locking onto mine with an intensity that makes my breath catch. "Take off your jacket," she orders, her voice low and commanding.

I swallow hard and comply, shrugging off the jacket and placing it on the back of a nearby chair. Emily steps closer, her perfume intoxicatingly sweet. She reaches out and runs a finger along the collar of my shirt, her touch sending electric shocks through my body.

"Good boy," she murmurs, her lips curving into a wicked smile. "Now, turn around."

I do as she says, my heart pounding in my chest. I feel her hands on my wrists, cool and firm, as she secures the cuffs around them. The metal bites into my skin, a reminder of who's in control here.

"Perfect," she whispers, her breath hot against my ear. "Now, let's see how well you follow instructions."

She leads me to the center of the room, her grip on my arm unyielding. I stumble slightly, my bound wrists throwing off my balance. Emily doesn't seem to notice or care. She positions me in front of her desk, her eyes gleaming with anticipation.

"Bend over," she commands, her voice dripping with authority.

I hesitate again, my mind screaming at me to stop this madness. But the look in her eyes—that seductive, all-consuming gaze—makes it impossible to resist. Slowly, I bend over the desk, my hands still cuffed behind my back. The wood is cold against my palms, a stark contrast to the heat building within me.

Emily steps behind me, her fingers trailing lightly down my spine. "Such a good boy," she coos, her voice a sultry caress. "Do you trust me, Jake?"

I nod, unable to form words. Trust her? How could I not? She's been the one constant in my life, the one person who always knows what I need, even when I don't.

Her hand moves lower, slipping beneath the waistband of my pants. I gasp as her fingers find their mark, teasing and tormenting me with expert precision. "You like that, don't you?" she asks, her voice a husky whisper.

"Yes," I manage to choke out, my body trembling with need.

"Good," she replies, her fingers continuing their relentless exploration. "Because tonight, you're mine."

And with that, she presses a button on the remote she's holding, and the vibrator hidden inside the desk begins to hum to life.

The vibrations from the desk buzz against my skin, a relentless pulse that sends waves of pleasure coursing through me. I bite my lip, trying to stifle a moan, but Emily's hand on my back presses down, urging me to stay still.

"Don't hold back," she whispers, her breath hot against my ear. "Let me hear you."

Her words are a command, and I can't resist. A low groan escapes my lips as the vibrator works its magic, teasing every nerve ending with precision. Emily's fingers trace patterns on my back, adding to the sensory overload.

"You like being at my mercy, don't you?" she asks, her tone dripping with satisfaction.

I nod, my face pressed against the cool wood of the desk. "Yes, Emily," I admit, my voice shaky with desire.

She chuckles softly, a sound that makes my body tremble. "Good. Because there's more where that came from."

With a flick of her wrist, she adjusts the remote, increasing the intensity of the vibrations. The sudden spike in pleasure is almost too much to bear, and I gasp, my hips bucking involuntarily. Emily's grip tightens on my back, holding me in place.

"Stay still," she commands, her voice firm. "Or else."

The threat hangs in the air, a promise of what's to come if I disobey. I force myself to remain still, my body trembling with the effort. Emily's fingers trail lower, slipping beneath the waistband of my pants once more. This time, she doesn't tease. She takes control, her hand moving with purpose.

"Such a good boy," she murmurs, her touch sending electric shocks through my body. "Do you want more?"

"Yes," I pant, my voice barely a whisper.

"Then beg for it," she demands, her eyes gleaming with anticipation.

I hesitate for a moment, the request shocking me to my core. But the look in her eyes—that seductive, all-consuming gaze—makes it impossible to resist.

"Please, Emily," I beg, my voice breaking. "Please, give me more."

Her smile widens, a predatory gleam in her eyes. "As you wish," she purrs, her hand moving faster, her fingers working in tandem with the vibrator.

The dual sensations are overwhelming, a tidal wave of pleasure that threatens to drown me. I can feel myself teetering on the edge, my body begging for release. Emily senses it too, her touch becoming more urgent, more demanding.

"Come for me, Jake," she whispers, her voice a sultry caress. "Show me how much you enjoy being mine."

Those words push me over the edge. With a strangled cry, I come undone, my body shuddering with the force of my orgasm. Emily doesn't stop, her hand continuing to move, milking every last drop of pleasure from me.

When it finally subsides, I collapse against the desk, my body spent. Emily steps back, her eyes gleaming with satisfaction. She reaches into her pocket and pulls out a small key, unlocking the cuffs around my wrists.

"That was just the beginning," she says, her voice low and dangerous. "There's so much more I want to show you."

I turn to face her, my heart pounding in my chest. "What do you have in mind?" I ask, my voice hoarse with desire.

She smiles, a wicked glint in her eyes. "Oh, Jake. You really have no idea, do you?"