Joined

"What's next?" Hermione asked, her voice low and sultry.

"How about a little role reversal?" Harry suggested, his eyes gleaming with mischief. He reached into a nearby drawer and pulled out a strap-on, made of velvety black material and adorned with a lifelike penis.

Hermione's eyes lit up with excitement as she took the strap-on from Harry's hand. She quickly fastened it around her waist, feeling the weight of the artificial cock between her legs. It was a thrill she hadn't quite experienced before, a sense of power and control that made her pulse race.

With a seductive smirk, she positioned herself behind Luna, who was still lying on the couch, her legs spread wide and her ass in the air. Harry took the cue and knelt behind Hermione, aligning his still-hard cock with her wet, waiting pussy. He slid into her easily, her muscles tightening around him as he pushed deep.

Hermione took a deep breath and leaned into the sensation of being filled by Harry's cock, the strap-on pressing against her clit as she began to thrust into Luna. The feeling was strange yet incredibly erotic, the softness of Luna's skin under her palms as she gripped her hips and began to fuck her in earnest.

Luna's eyes went wide with surprise and pleasure as she felt the strap-on penetrate her, the velvety material gliding in and out of her pussy as Hermione found her rhythm. She pushed back against her, her body responding instinctively to the new sensation, her own orgasm still reverberating through her.

Hermione's breath hitched with every thrust into Luna, the base of the strap-on rubbing against her clit, sending waves of pleasure crashing through her. She had never felt so dominant, so in control. Harry's cock inside her was a delicious reminder that she was also being pleasured, and she reveled in the feeling of being sandwiched between her two friends.

Luna's moans grew louder as Hermione picked up speed, her hips bucking back to meet the faux cock with every push. Harry's hands roamed over Hermione's body, teasing her nipples and tracing down her spine, sending shivers down her body. The room was a symphony of wet sounds and muffled cries, the candles casting an erotic glow on their entwined limbs.

"Oh, Merlin," Hermione gasped, feeling her second orgasm building. She pushed into Luna harder, her own pussy clenching around Harry's cock, the friction from the strap-on sending sparks of pleasure shooting through her. Luna's eyes were squeezed shut, her mouth open in a silent scream, her body a canvas of passion and desire.

As Harry felt Hermione tightening around him, he knew she was close. "Cum for me, Hermione," he whispered in her ear, his breath hot against her neck.

The words were all it took. With a scream that was part pleasure, part release, Hermione climaxed, her body trembling with the intensity of her orgasm. The strap-on bucked inside Luna, her contractions sending shockwaves through Harry's cock, pushing him closer to his own release.

Harry came at the same time Luna did trapping Hermione in between their orgasms, her body shaking violently with the overwhelming sensation. The strap-on was still buried deep inside Luna as Luna's pussy spasmed around it, and Harry's cock pulsed within her. They stayed connected, their breathing ragged, the room echoing with the aftershocks of their pleasure.

Finally, Harry pulled out, and Hermione slumped forward, the strap-on slipping from her waist and falling to the floor with a thud. They lay there, a sweaty, tangled mess of limbs and smiles. "Well, that was certainly educational," Hermione murmured, her voice still thick with desire.

Luna chuckled, her cheeks flushed. "I never knew the library could be so... enlightening."

They lay there for a few moments, basking in the afterglow of their shared pleasure. Harry leaned over, kissing both girls softly on the forehead. "This is just the beginning," he whispered, his voice a promise of more to come.

Their breathing slowly returned to normal as they disentangled themselves, the cool air of the library brushing against their overheated skin. Harry stood, his cock still semi-erect, and offered a hand to each girl, helping them up from the couch. Hermione felt a twinge of excitement at the prospect of exploring more of the castle and the sexual adventures it held.

"Where to next?" Luna asked, her eyes sparkling with curiosity.