office duties

I barely made it out of the bedroom before Mom’s footsteps reached the top of the stairs. My heart was hammering so hard I was sure she could hear it. Derek’s cum was still leaking down my inner thighs, warm and sticky, as I quickly smoothed down my oversized t-shirt and tried to look normal.

Mom appeared at the doorway, still in her jogging clothes, glowing with sweat and smiling brightly.

“Oh, you’re both in here,” she said, glancing between us.

I forced a shaky smile. “Yeah… I came to ask Derek what he wanted for breakfast.”

Derek leaned casually against the headboard, looking perfectly composed, while I stood there with my stepfather’s load dripping out of me.

Mom didn’t seem to notice anything strange.

“That’s sweet of you, honey. Actually, I have some news.” She walked further into the room.

“My old friend Elena is getting married today. I completely forgot to mention it. It’s a bit last-minute, but I have to attend. I’ll be gone most of the afternoon and probably into the evening.”

She turned to Derek with a warm smile.

“Why don’t you take Cassandra with you to the office today? She’s been stuck at home too much. It’ll be good for her to see what you do. And you two can bond more.”

My stomach dropped.

Derek’s eyes darkened with hunger as he looked at me. A slow, predatory smile tugged at his lips.

“That’s a great idea,” he said smoothly, his voice deep and calm.

“I’ll take good care of her at the office.”

Mom beamed, completely oblivious.

“Perfect! I’ll go shower and get ready.” She kissed my forehead, then Derek’s cheek, before leaving the room.

The second her footsteps disappeared down the hall, Derek was on me.

He grabbed me by the throat and pushed me back against the wall, kissing me hard and possessively. His hand slipped under my shirt and found my dripping pussy, pushing two fingers inside me roughly.

“You little liar,” he growled against my lips.

“Coming in here to tell Daddy to stay away, but you’re still full of my cum.”

I whimpered, my legs trembling.

“Derek… we can’t keep doing this.”

He spun me around, pressing my chest against the wall.

“You don’t get to tell me what we can’t do, princess. Not when this pussy still belongs to me.”

He dropped to his knees, spread my ass cheeks, and licked me from my clit all the way up to my tight asshole, tasting both of us. I moaned, biting my arm to stay quiet as Mom moved around in the bathroom.

After a few torturous minutes, he stood up and whispered hotly in my ear,

“At the office today… I’m taking your ass.”

“Now get ready”

---

The drive to Derek’s office was tense and silent.

My thighs were sticky, and every time I shifted in the passenger seat, I felt fresh cum leak out of me. Derek kept one hand on my thigh, slowly sliding it higher under my sundress, teasing my pussy but never giving me enough.

When we got to his large, luxurious office on the top floor, his secretary greeted us politely. Derek introduced me as his stepdaughter and told her to hold all calls and not disturb us for the next few hours.

The second the door locked.

“Look Derek, we really need to stop this. What if mom finds out?” I asked.

“If your mommy finds out, it's gonna be your little business and not mine”

Then, he came on me again.

He bent me over his massive mahogany desk, flipping my sundress up over my waist. He spanked my ass hard, making me yelp.

“You’ve been a naughty girl all morning, Cassandra,” he growled, spreading my cheeks.

“First you try to push Daddy away, then you lie to your mother with my cum still inside you.”

I heard him unzip his trousers. His thick cock slapped against my ass.

“Please… I’ve never done anal before,” I whispered, nervous and shamefully excited.

“I know,” he said darkly, rubbing the fat head of his cock against my tight, virgin asshole.

“That’s why I’m going to be the first to claim it.”

He spat on my hole, rubbing it in with his thumb before pressing the head of his cock against the tight ring. I gasped as he started pushing in slowly, stretching me open.

“Fuck… it’s too big, Daddy—”

“Relax, princess,” he groaned, his voice strained with pleasure.

“Take every inch like a good girl.”

He worked himself in deeper, inch by thick inch, until his heavy balls rested against my pussy. The fullness was overwhelming. I was panting, gripping the edge of the desk, tears of pleasure and pain pricking my eyes.

Once he was fully buried inside my ass, Derek leaned over me, biting my neck.

“This ass is mine now,” he rasped, starting to thrust. Slowly at first, then harder, deeper. The obscene sound of his hips slapping against my ass filled the office.

He reached around and rubbed my clit as he fucked my ass, turning the pain into mind-blowing pleasure. I moaned loudly, no longer able to stay quiet.

“Daddy… oh my god…”

“That’s right. Call me Daddy while I fuck your tight little asshole,” he growled, picking up speed.

He fucked me harder, pounding into my ass with long, powerful strokes. The desk creaked beneath us. My breasts bounced against the cold wood. I came violently, my pussy gushing while my asshole clenched tightly around his thick cock.

Derek groaned in satisfaction. “Good girl. Now take Daddy’s load.”

He buried himself deep and exploded, pumping rope after thick rope of hot cum deep inside my ass. He stayed buried inside me for a long moment, grinding slowly, making sure every drop stayed in.

When he finally pulled out, I felt his cum leaking from my freshly fucked asshole.

He turned me around, kissed me possessively, and whispered against my lips

“This is just the beginning of what we’re going to do today, princess. We still have hours before your mother gets back.”