The cozy treehouse nestled in the heart of the Pokemon Preserve was Stela's sanctuary. As a plump Raichu, she enjoyed the peace and quiet that came with living in a place untouched by human hands. She lazed on a large cushion, her rotund belly gleaming in the dappled sunlight that filtered through the leaves. A sly smile played on her lips as she idly stroked her belly, her mind wandering to thoughts of her little brother, Seija.
Seija, the timid Pikachu with the unusually large cock, entered the treehouse, his cheeks flushed. He couldn't help but blush as he noticed his sister's gaze lingering on his lower half. Stela raised an eyebrow and smirked at her little brother. "Seija, you're looking... rather well-endowed today," she said with a playful insult.
Seija stuttered out a response, trying to hide his embarrassment. Stela chuckled and patted the cushion next to her, inviting him to sit. As Seija settled down, Stela leaned in closer, her eyes glinting with mischief. "You know, I've been feeling a bit... restless," she said, her voice low and sultry.
Seija gulped, knowing all too well what was coming. Stela's heat cycles were notorious, and he'd always been her willing partner. Stela's eyes trailed down to Seija's crotch, her smile growing wider. "I think it's time for you to help me out, little brother," she said, her voice dripping with innuendo.
Seija couldn't help but feel a stirring in his loins as Stela's words washed over him. He'd always been powerless to resist her when she was in heat. Stela reached out, her thumb brushing against Seija's ear. She leaned in, her breath hot against his cheek. "Unless, of course, you're not up for the task," she whispered, her voice laced with challenge.
Seija's competitive nature took over, and he puffed out his chest, trying to appear larger than he was. "Of course I am, Stela," he said, his voice more confident than he felt.
Stela's eyes sparkled with amusement. "Then prove it," she said, her voice low and demanding.
Seija hesitated for a moment before leaning in to kiss his sister. Stela deepened the kiss, her tongue exploring Seija's mouth. As the kiss deepened, Stela's hand found its way to Seija's crotch. She squeezed gently, a pleased hum escaping her throat.
Seija couldn't help but moan at his sister's touch. He'd always been sensitive there, and Stela knew just how to touch him. Stela broke the kiss, her eyes heavy-lidded with desire. "I think it's time for you to show me just how big that thing of yours is," she said, her voice husky.
Seija's heart raced as he undid his pants, revealing his large cock. Stela's eyes widened in surprise before a sly smile spread across her face. "Well, well, well, look at that," she said, her voice dripping with satisfaction. "I knew you were up to the task, little brother."
Seija couldn't help but feel a sense of pride as his sister praised him. He'd always been the butt of jokes because of his small size, but Stela had always seen him for who he was - a strong, capable Pikachu.
Stela wasted no time in wrapping her lips around Seija's cock, her tongue swirling around the tip. Seija moaned as his sister took him deeper into her mouth, his hands finding their way to her head.
Stela's mouth felt like heaven, and Seija couldn't help but thrust his hips forward, fucking his sister's mouth. Stela's eyes fluttered up to meet Seija's, her gaze challenging him to go deeper.
Seija took the challenge, thrusting his hips forward with more force. Stela's mouth felt like a vice, her lips tight around his cock. Seija couldn't help but moan as he felt himself getting closer and closer to the edge.
Stela pulled back, her lips glistening with Seija's precum. "I want you inside me, Seija," she said, her voice low and demanding.
Seija didn't need to be told twice. He positioned himself between Stela's legs, his cock poised at her entrance. Stela's eyes met his, her gaze challenging him to take her.
Seija thrust forward, burying himself deep inside his sister. Stela moaned, her back arching off the cushion. Seija began to thrust in and out of his sister, his pace quickening.
Stela met Seija thrust for thrust, her moans growing louder. Seija could feel himself getting closer and closer to the edge, his balls tightening.
Stela's moans grew louder, her paws digging into Seija's back. Seija could feel himself on the brink of release, his thrusts becoming more erratic.
With one final thrust, Seija came, his cum filling Stela's pussy. Stela moaned, her pussy clenching around Seija's cock.
Seija collapsed onto Stela, his breathing ragged. Stela wrapped her arms around him, her breathing just as ragged.
"I knew you wouldn't let me down, Seija," Stela said, her voice low and satisfied.
Seija smiled, feeling a sense of pride wash over him. He'd proved himself to his sister, and that was all that mattered.
As they lay there, their bodies entwined, Seija couldn't help but feel grateful for his sister. She'd always been there for him, pushing him to be his best self. And in that moment, Seija knew that no matter what life threw their way, they'd always have each other.
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