The final bell echoed through the university halls as I lingered outside my big sister Elena's classroom. The sharp-witted history professor spotted me and smirked. "Staring again, little brother? You know that makes me wet and distracted during lectures."
We ducked into the empty faculty bathroom for privacy, the air thick with unspoken tension. "You think you can just turn me on like this without consequences?" she challenged, her strong gaze locking on mine. I fired back, "Maybe I want the consequences, sis."
Elena, never one to submit, shoved me into a stall and dropped to her knees. "Then take this blowjob and see if you can handle more." Her mouth enveloped my cock, making it hard and throbbing as she worked me expertly.
She stood, hiking her skirt to reveal her dripping pussy. "Fuck me hard against this wall," she ordered, guiding me inside her. We moved together, both sweating and panting, her ass pressing back with commanding rhythm while we grew hornier by the second.
I gripped her hips as she came with a sharp cry, her body clenching around me. Moments later I followed, pumping cum deep into her pussy. "That's it, fill me up," she panted, still in control.
We straightened our clothes in the mirror, hearts racing from the forbidden thrill. Elena flashed a knowing smile. "You might have just gotten me pregnant, but this secret only gets hotter from here."
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This is just the opening chapter. Continue the saga - or write a steamy tale starring you.