Anton strode into his sister Olia's bedroom without so much as a knock, making himself comfortable on her bed as if he owned the place. Olia, who was in the middle of changing, glared at him from the corner of the room.
"Anton, what the hell are you doing in here? Get off my bed and stop spying on me!" she snapped, clutching her towel tightly around her.
Anton just smirked at her, his eyes raking over her body in a way that made Olia's skin crawl. "Come on, sis. You can't tell me you've never thought about what it would be like to fuck me."
Olia's jaw dropped in shock. "What? No! Get out of my room, right now."
But Anton was undeterred. He leaned back on her bed, his arms behind his head. "You know, I could teach you a thing or two. You're a virgin, aren't you?"
Olia's face burned with embarrassment. She had always been a bit of a late bloomer, and the thought of admitting her inexperience to her smug older brother was mortifying. But she found herself nodding, unable to meet his gaze.
"Well, then," Anton said, sitting up and starting to unbutton his shirt. "I guess it's a good thing I'm here to help you out. Take off your pants, Olia."
Hesitantly, Olia did as she was told. She lay down on the bed, her heart pounding in her chest. She couldn't believe she was actually going through with this.
Anton noticed her nervousness and leaned down to whisper in her ear, "Relax, sis. I'll be gentle."
Olia took a deep breath, trying to calm herself down. She felt Anton's fingers at the waistband of her underwear, and then they were gone. She closed her eyes, feeling his hard cock against her thigh.
"Olia," Anton said, his voice low and husky. "Do you trust me?"
She opened her eyes and looked at him, seeing the confidence in his gaze. She nodded, and then she felt him slowly enter her. She gasped at the sensation, her body tensing up.
"Just relax," Anton murmured, his hands on her hips. "Breathe, Olia."
Olia did as she was told, taking deep breaths as Anton began to move inside her. She couldn't believe this was happening, but at the same time, it felt right. She closed her eyes again, losing herself in the moment.
"Anton..." she breathed, her voice barely above a whisper.
He leaned down to kiss her, his tongue exploring her mouth as his hips continued to move. Olia moaned, her hands clutching at the sheets.
"You feel so good, Olia," Anton murmured, his breath hot against her neck.
Olia couldn't help but agree. She had never felt anything like this before. It was intense and overwhelming, but in the best possible way.
As they moved together, Olia realized that maybe her brother wasn't such a bad teacher after all. She just hoped she could keep up with the devilish details of their illicit affair.
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