“Kim,” I said, trying to sound confident. Authoritative.
Masterly.
I stared at my sister’s tits, her nipples erect through the thin fabric of her shirt, her beautiful skin flushed.
Her shorts were wet, I realized.
She was aroused.
She was excited by what had just happened. By what was about to happen.
“Kim,” I repeated. “T-take your clothes off. Now.
“That’s an order.”
My sister’s eyes widened as she absorbed my instructions. For a moment, I thought it was going to be a repeat of the last week. That Kim was going to silently struggle, then refuse to obey my command. That she’d march downstairs, and I wouldn’t see her again for hours.
But instead, she shivered in pleasure, and nodded.
My sister nodded, and slowly began to undress.
I stared, agog, as she pulled her tank top up, revealing her breasts. They were perfect: small and perky, no more than a handful each. Her nipples were brown and hard, and she let her top fall to the floor, leaving her naked from the waist up.
She stood up and unclasped her shorts and slid them down her legs, kicking them aside. She stepped out of them, and kicked them away.
My sister stood in front of me, wearing nothing but a pale blue pair of panties. I allowed my eyes to feast on her body, taking in her smooth skin, the flatness of her stomach, the firmness of her ass.
She was lovely.
“Turn around,” I said, my voice hoarse. “Show me your rear.”
My sister’s fingers were hooked into her panties, ready to take them down, but with a shiver of pleasure, she obeyed.
She turned around, turning her back to me, bending over as she began lowering her panties.
My cock was rock-hard as the delicate curves of her ass came into view, her pert little tush revealed as she lowered her underwear. I groaned in pleasure as my sister stood naked in front of me, her full, round ass on display.
“Put your hands behind your back,” I ordered, and Kim did as she was told. I gripped her waist and turned her around, my eyes flicking down to the patch of fuzz between her legs.
Fuck. My sister’s pussy. Like forbidden fruit, I knew I shouldn’t be seeing this, shouldn’t be enjoying it. No brother should ever see his sister like this – exposed. Naked.
Wet.
My sister’s musk filled the air, much as it had when we’d last been here. When she’d cum at being told she was a good girl.
“Kneel,” I commanded, and my sister complied, lowering herself to her knees. She stared at my crotch, waiting for further instructions, her eyes growing wider as I lowered my pants.
As my erection came into view.
My cock sprang free, my balls hanging low, my skin slick with pre-cum, my swollen head glistening with a bead of fluid.
I wanted her to suck it, of course. Or jerk me off. I wanted to feel Kim’s obedient mouth on my erection, her hands getting me off.
But even though I knew she would, even though I knew she was mine to command, something held me back. Maybe it was fear, or guilt, but I held back from taking that next step. From giving my sister the order that I knew my sister would obey.
Instead, I wrapped one fist around my erection and began to pump. I stroked my dick, watching my sister stare lustfully at my hand moving over my shaft. At the look of longing in her face.
She wanted to be the one pleasuring me. The tape had told her: it was her purpose. It was why she existed. To serve me. To serve her brother. Her master.
I pumped faster, my balls tightening, the pressure building in my shaft.
My sister watched, mesmerized, her eyes glued to my hand. She was so aroused, so desperate to serve me, that she was panting heavily. Her eyes widened as I let out a long groan; I’d never been in such an erotic situation in my life. My sister kneeling in front of me, naked, watching with desire as I jerked off.
In a few minutes, I was trembling. And in another minute, I was moaning and grunting as my orgasm began.
As I came, I looked at Kim, watching with hunger in her eyes. Her hunger was soon rewarded, as I shot my load onto her – onto my older sister’s bare body, her face, her tiny tits, her flat stomach.
I kept pumping my cock until there was nothing left, until my sister was covered in my seed. As soon as my orgasm subsided, Kim’s began: she moaned loudly, and her body shook as she climaxed.
The intensity of her orgasm made my sticky liquid drip down to her bare thighs; when she finished, her entire body was dripping with my load.
Just as she had two weeks ago, her face went blank. Last time, she’d been dressed in a tank top and shorts.
This time, she was naked, covered only by her brother’s semen. Her eyes opened, widened, looked at me in reverence and fear.
“What…what happened?” she asked, her voice shaking. As she spoke, some of my cum dripped into her mouth; her tongue darted out excitedly, ready to swallow it down.
Perhaps I should have been afraid. Kim had just woken up from a trance, to the sight of her brother’s cock and a pile of her clothes. Covered in cum – warm cum which had clearly come from my softening cock.
But I wasn’t worried.
I was in charge.
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