The client who wanted me to be his stepsister

The apartment was plunged into semi-darkness, lit only by a warm lamp in the corner. I was sitting on the couch, my legs crossed, wearing a loose, almost transparent white shirt that barely covered my thighs. My hair was carelessly tied back, as if I had just woken up from an afternoon nap.
When he rang the doorbell, I smiled. I already knew what kind of customer he was.
He entered slowly, his gaze slightly embarrassed but full of desire. He was a handsome, well-built man, about 35 years old. He sat down in the armchair opposite me, saying nothing at first.
“So… you said on the phone that you wanted something… special,” I murmured in a soft, almost innocent voice.
He nodded, swallowing hard.
“Yes. I want you to… pretend to be my half-sister. My younger sister.” The one who had teased me for years without knowing what she was doing to me.
I raised my eyebrow slightly, amused and excited at the same time. These taboo games were always the hottest.
I slowly stood up and approached him, rocking my hips. I stopped right between his open legs and leaned in slightly, letting him see how my shirt opened and revealed the curve of my breasts.
— You mean… you want me to be your naughty stepsister? I whispered, with a playful smile. The one who enters your room without knocking? The one who walks around the house in just a long t-shirt and panties, knowing you’re looking at me?
He took a deep breath. The outline of his arousal was already visible through his pants.
— Exactly… he murmured hoarsely.
I sat on his knees, my face very close to his. My lips were almost touching his ear when I spoke again, in a sweet, almost childish, yet seductive voice:
— Little brother… why are you looking at me like that? Did I do something wrong?
My hand slowly slid down his chest, down to his belt.
— I saw the way you looked at me when I got out of the shower… I continued. Do you think I don’t notice? Do you think I don’t know that you masturbate thinking about your stepsister?
He moaned softly. I untied his belt and pulled out his already hard and hot member. I stroked him slowly, with soft fingers, while I continued to whisper in his ear:
— You’re a bad brother… very bad. I’m your little sister and you dream of putting me in your bed. Laying me on my back and lifting this T-shirt… like that?
I stood up a little, pulled my shirt over my head, and was left in just my black lace panties. My breasts were now completely exposed, my nipples already hard from play.
I sat back on him, slowly rubbing against his erection through the thin material.
“Tell me… what do you want to do to me, little brother?” I asked in an innocent voice, but my eyes were full of lust. Do you want to kiss me down there? Do you want to make me moan your name as you penetrate me?
He couldn’t resist anymore. He grabbed my waist and kissed me hard, almost desperately. His tongue invaded my mouth as his hands slid down my bare back.
I helped him take off his pants, then pushed my panties aside. I was already wet, slippery with anticipation. I slowly descended on him, taking him inside me with a long, trembling moan.
— Ahh… little brother… you’re so big… I whispered, perfectly imitating an excited and guilty voice.
I began to move rhythmically, rising and descending on him, squeezing him inside me. He held my hips, guiding me, pushing himself deeper with each movement.
— Harder… please… I’m your sister and yet you fuck me so well… I moaned, accelerating the pace.
My breasts bounced in front of his face. He caught one in his mouth, sucking my nipple with lust while I rode it more and more frantically.
When he felt me ​​close, he flipped me over on the couch, laid me on my back and lifted my legs onto his shoulders. He entered me again, deep, fast, hitting me exactly where he needed to.
— Yes… like that… fuck your stepsister… I cried out, completely lost in the role.
The orgasm hit me hard, making me tremble and contract around him. He followed right after, exploding deep inside me with a guttural moan, filling me with his hot cum.
After we calmed down, we remained embraced on the couch. He stroked my hair gently.
— You were… perfect, he whispered.
I smiled and kissed him lightly on the lips.
— Anytime you want to visit your “stepsister”… you know where to find me, little brother.