You are woken up

The dreams come fast and vivid—your teasing all day replaying in relentless detail: the flash of your pussy on the couch, every brush and grind driving him mad. He wakes on the couch with a painful erection, guilt and desire twisted so tight he can't breathe.

She's upstairs. Door's open—I saw the light under it. She's waiting. The thought is poison and salvation at once.

He stands, heart hammering, and climbs the stairs slowly, each step a battle. Don't do this. She's your sister. Protect her. But the memory of how perfectly your raw pussy engulfed his cock last night, of how close he came to impregnating you, burns too hot.

Your door is ajar, just like he hoped—feared.

He pushes it open quietly. Moonlight spills across your bed. You're flat on your back, legs spread wide with your head tilted sideways. Your skimpy panties show a dark spot in the center, evidence of your dreams plaguing you, too. Your breathing is shallow, restless.

He stands there, fists clenched, cock throbbing. The internal war is brutal: Walk away. She's trusting you. But the sight of you—so soft, so fertile—snaps something inside.

He crosses the room in two strides, hand already freeing himself as he climbs onto the bed in front of you.

Maybe I can just pull out again, like yesterday? Just get rid of these urges and go back to sleep - he lies to himself.

You stir faintly but don't wake, a soft sigh escaping your lips. His hands tremble as he hooks fingers under the waistband of your panties, sliding them down your hips slowly, inch by inch, exposing the slick heat between your legs. The fabric clings for a moment before peeling away, drawing strings of grool and revealing your swollen folds, already wet and parted as your body knows what's coming.

He can't resist. Lowering himself between your thighs, he spreads them gently wider, breath hot against your skin. His tongue traces you first—slow, deliberate licks along your outer lips, tasting the sweetness he's craved all day. You whimper in your sleep, hips twitching instinctively toward his mouth. Emboldened, he delves deeper, lapping at your entrance, circling your clit with firm, teasing strokes. The flavor of you—musky, aroused, forbidden—drives him wild. Your body responds even ****, more slickness coating his tongue, thighs quivering as he sucks gently on your clit.

The guilt fades under the rush of possession. Mine, he thinks, hand stroking himself free as he feasts on you. When your breathing quickens, soft moans filling the room, he can't wait any longer.

He rises, positioning himself between your legs, cockhead pressing against your soaked entrance. One slow push, and he sinks in—inch by inch, the tight, wet heat enveloping him just like last night, but better, conscious of every sensation this time. You stir as he bottoms out, eyes fluttering open in confusion and dawning pleasure.

He freezes, buried balls deep in your pussy. "I'm so sorry," he whispers, voice rough. "I'ts just this body of yours and all this teasing today..."

The dreams crash into reality—the fullness, the stretch, exactly as you've craved. Confusion flickers, but the curse's pull is too strong; your legs wrap around him, pulling him closer. "Don't stop," you murmur, voice sleepy but certain, hips rocking up to meet him. "Stay with me until morning."

And he does. The night becomes theirs—slow at first, then urgent, positions shifting as dawn approaches: missionary with deep, grinding thrusts; you on top, riding him with abandon; from behind as he claims you possessively. He finishes deep inside you every time, flooding you relentlessly, your shared moans echoing the commitment to what comes next.

When morning comes around you are on top of your brother, riding him gently. You both stare into each others eyes lovingly, as you drive your hips up and down on his cock. You have lost count of how many times he filled you - you feel a satisfying warm fullness inside your womb. The excess is steadily flowing out of you down his shaft. Both your pubic areas and your bed sheets are a sticky mess of fresh and dried cum.

You feel the first sun rays hit your heaving chest as you ride your brother. As your eyes break away from your brother's gaze you look into the morning sun. Smiling, you realize:

This is it, the 48th hour is over. You are pregnant, inseminated by your own sibling and loving it. You could not escape the curse...and you're glad you didn't.