Elle, Frank's Older Sister

In the heart of the city, Frank, an unassuming young man, pulled up in his old car, his heart pounding with anticipation. He was about to meet his next client, a woman who had requested his services through a discreet online platform. However, this time was different. This time, the woman was Elle, his older sister.

Elle, a successful intern at a prestigious law firm, greeted Frank at the door of her modern apartment. She was dressed in a sharp suit, her long brown hair cascading down her shoulders. Frank's eyes widened as he took in her appearance, a mix of familiarity and desire swirling within him.

"I know about Mom. About what you did." Elle's voice trembled slightly. Frank's eyes widened, his heart sinking. He had never imagined that their mother would tell his sister about the fateful hour they spent together. "I want... I want that as well. What you gave her." At this, Frank's eyes were like dinnerplates.

"Elle, I don't think this is a good idea," Frank said, his voice barely above a whisper. "We're siblings."

Elle stepped closer, her eyes locked onto Frank's. "I know, Frank. But I can't stop thinking about it. About you. About... him." She gestured towards Frank's crotch, her cheeks flushing a deep red.

Frank hesitated for a moment, then nodded. He had always had a small crush on Elle, and the thought of being with her was both terrifying and exhilarating. And he'd already crossed that taboo with his mother, adding his sister to it wouldn't be _that _bad would it?

Elle led Frank to her bedroom, her heart pounding in her chest. She turned to face him, her fingers trembling as she unbuttoned her suit. Frank watched in awe as she revealed her black lingerie, her round breasts straining against the fabric.

Frank's hands shook as he undressed, his cock straining against his pants. As soon as it was free, Elle gasped, her eyes widening in shock and awe. It was just as their mother had described, huge and thick, a sight that both terrified and excited her.

Elle knelt before Frank, her hands trembling as she reached out to touch his cock. It was warm and hard, pulsing in her hand. She leaned forward, her tongue darting out to taste the pre-cum beading at the tip.

Frank groaned as Elle took him into her mouth, her lips wrapping around his thick shaft. She moved slowly at first, her mouth stretching to accommodate his size. But as she grew more confident, she began to move faster, her tongue swirling around the head of his cock.

Frank could feel himself nearing the edge, his balls tightening with pleasure. He pulled away from Elle, his breath coming in ragged gasps. "I can't... I can't cum yet," he said, his voice hoarse with desire.

Elle nodded, her lips swollen and red from sucking Frank's cock. She lay back on the bed, her legs spreading wide. Frank knelt between her thighs, his eyes drinking in the sight of her wet pussy.

He leaned forward, his tongue darting out to taste her. Elle moaned, her hands fisting the sheets as Frank licked and sucked at her clit. He moved his tongue lower, sliding it into her pussy, his fingers joining in to stretch her wide.

Elle cried out as Frank's tongue found her G-spot, her body trembling with pleasure. She could feel herself nearing the edge, her pussy clenching around Frank's tongue. She'd been alone for too long, denied herself this feeling for too long while obsessing over school and getting a career. She needed this.

Frank pulled away, his cock throbbing with need. He positioned himself at the entrance of Elle's pussy, his eyes meeting hers. "Are you sure about this?" he asked, his voice barely above a whisper.

Elle nodded, her eyes filled with desire. "I've never been more sure of anything in my life," she said.

Frank pushed forward, his cock stretching Elle's pussy wide. She gasped, her nails digging into his shoulders as he filled her completely. Frank began to move, his hips thrusting in a steady rhythm.

Elle moaned, her body moving in time with Frank's. She could feel every inch of his cock, the sensation both painful and pleasurable. Frank leaned forward, his lips capturing hers in a passionate kiss.

The two moved together, their bodies slick with sweat. Frank could feel Elle's pussy clenching around his cock, her orgasm building. He thrust harder, his balls slapping against her ass as he chased his own release. Only his mother's pussy had fit his cock better than this, like a key sliding into a hole it was meant for.

Elle cried out, her body trembling as she came. Frank followed shortly after, his cock pulsing as he filled her pussy with his cum.

The two lay there for a moment, their bodies entwined. Frank pulled out of Elle, his cock still hard and throbbing. Elle reached for her purse, pulling out a wad of cash.

Frank shook his head, his eyes meeting hers. "I can't take your money, Elle," he said. "This was... different."

Elle nodded, a small smile playing on her lips. "I know," she said. "And I hope it's not the last time."

Frank leaned forward, capturing Elle's lips in a soft kiss. "It won't be," he said, his voice filled with promise.

As they cleaned up and dressed, Frank couldn't help but feel a sense of peace. He had always felt like an outcast, his huge cock and balls a curse rather than a blessing. But with Elle, he felt seen. He felt desired.

And as he left her apartment, he knew that he would be back. He would be there for her, whenever she needed him. Because for the first time in his life, Frank felt like he had found his place. And it was with his sister.

AN: Very lightly edited, the AI refused to follow up on Elle having gotten here thanks to their mom, as opposed to her mom having some undefined indiscretion. Other than clarifying that, it's all AI, using Smitten Plus.