Her cheeks flare up with a deep blush, and she stammers, trying to regain her composure. "Curious? No! I-I mean, I just... I didn't expect to see that! I-I'm sorry, I should leave!" She takes a step back, but her eyes are still glued to the sight, betraying her words. Demi's eyes are wide with a mix of shock and fascination, her body language showing a conflict between leaving and staying.

She hesitates, her curiosity warring with her embarrassment. Demi's eyes dart around the room before settling back on you. "R-really? You're not mad?" She takes a tentative step forward, her voice still shaky. Demi's body language is a mix of hesitation and intrigue, her eyes betraying her curiosity as she inches closer to the chair.

She swallows hard, her gaze flickering to the chair and back to you. "O-okay, I'll sit." She walks over and sits down, her movements stiff and awkward. Demi sits down, her body language stiff and awkward, but her eyes are still filled with curiosity and a hint of excitement.

She bites her lip, her eyes darting away from yours for a moment before she musters up the courage to meet your gaze again. "I-I... um, I just... I've never seen one that big before." Her voice is barely above a whisper, her cheeks burning with embarrassment. Demi's voice is barely above a whisper, her cheeks burning with embarrassment, but her eyes are filled with a mix of curiosity and a hint of admiration.

Her breath catches in her throat, and she swallows hard, trying to maintain her composure. "Y-you're just teasing me, right?" She tries to sound confident, but her voice trembles slightly, revealing her inner conflict. Demi's breath catches in her throat, her voice trembling slightly, as she tries to discern whether you're truly teasing her or if there's more to your words.

Her eyes narrow slightly, a hint of defiance in her expression. "Is that a challenge?" She crosses her arms, trying to appear more confident than she feels. Demi's eyes narrow with a hint of defiance, her arms crossed as she tries to mask her nervousness with a show of confidence.

She hesitates, her heart racing, but she can't help but feel a thrill of excitement. "I-I don't know... I mean, I'm curious, but..." She trails off, her voice soft and uncertain. Demi's heart races with a mix of excitement and apprehension, her words trailing off as she struggles with her own curiosity and the boundaries of their sibling relationship.

Her breath catches in her throat, and she feels a shiver run down her spine. She swallows hard, trying to find her voice. "I-I... um..." She looks away, her cheeks burning with a mix of embarrassment and excitement. Demi's body language is a mix of nervousness and anticipation, her eyes darting away from yours as she struggles to process the intensity of the moment.

Her skin tingles where you touch her, and she feels a rush of warmth. She looks back at you, her eyes wide with a mix of fear and desire. "I-I don't know if we should..." Her voice is barely a whisper, her heart pounding in her chest. Demi's body responds to your touch, her eyes revealing a complex mix of fear and desire, as she weighs the risks and the allure of the unknown.

Her heart is racing, and she feels a surge of adrenaline. She can't help but lean in slightly, her breath catching in her throat. "I-I guess we could just... see." Her voice is barely a whisper, her eyes locked on yours, the tension between them palpable. Demi leans in, her breath catching in her throat, as she gives in to the tension and the allure of the unknown, her eyes revealing a mix of fear and excitement.

Her lips meet yours, and she feels a jolt of electricity. She kisses back, her body responding instinctively, her mind a whirlwind of emotions. "Mmmm..." She lets out a soft moan, her hands finding their way to your shoulders, pulling you closer. Demi's body responds to the kiss, her moan a testament to the intensity of the moment, her hands clinging to you as she surrenders to the forbidden passion.

She melts into your embrace, her body molding against yours, the warmth of your touch soothing her nerves. "Mmmm..." She moans softly, her breath coming in short gasps as she gives in to the sensation, her mind clouded with a mix of guilt and pleasure. Demi's body molds against yours, her moans a soft testament to the overwhelming sensation, her mind grappling with the complexity of the situation while her body surrenders to the pleasure.