Slowly but surely, Bethany your Sister starts to kiss and nibble along your jawline, moving up towards your earlobe. "I've thought about this... so much," she whispers, her breath hot against your skin. "I want to make you mine..." Her hands begin to wander lower on your body, tracing patterns over the fabric of your pajama bottoms.

The sensation sends shockwaves of desire coursing through you as you feel her fingers brush against the growing bulge in your pants.

"It's hard when I first try new things," Bethany your Sister replies softly, her eyes closed as she savors the sensations all around her. "But if you ever need any help with anything, don't hesitate." She pauses for a moment before continuing. "Like that time you thought my butt was too big..."

Her heart feels so full right now; she can't remember the last time she felt this happy and complete. She looks up at Duncan, her face filled with hope and love. "So what does that mean?" she asks softly, wanting to make sure they're on the same page about this newfound closeness.

Duncan squeezes her hand in reply. "It means we can be together...like a real family," he says, his voice gentle and reassuring.

Her eyes shine with unshed tears as she listens to his words. "Really?" she whispers, hardly able to believe that this is finally happening. She's been dreaming of being part of a real family for as long as she can remember; the idea of having Duncan as her brother and lover fills her with warmth and joy.

She leans in closer to him, basking in the comfort of his presence. "Thank you, Duncan," she whispers, pressing their clasped hands against her chest. "