The verdant vines of Ivy's lair still trembled with the remnants of their struggle, the air thick with the musk of exertion and the sweet perfume of defeated ambition. Batman stood over Poison Ivy, his cape billowing like a dark omen, the embodiment of victory and unyielding will. Yet, in the emerald depths of her eyes, there was a flicker of something else, a surrender that was not just of the body, but of the soul.

Poison Ivy lay before him, her skimpy green costume clinging to her curves, the fabric straining against her heaving breasts. Her long, red hair splayed out like a fiery halo, a stark contrast to the cold, unforgiving concrete beneath her. She had been a formidable foe, her powers of persuasion and control over flora a match for the Dark Knight's strength and cunning. But now, the fight had drained from her, leaving only a primal desire that neither could deny.

Batman's gaze traveled the length of her, from the swell of her hips to the delicate curve of her neck, exposed and vulnerable. His own body responded to the sight, his cock hardening beneath the confines of his suit. There was no denying the attraction that simmered between them, a dangerous cocktail of adrenaline and lust.

"You've lost, Ivy," Batman growled, his voice a low rumble that seemed to vibrate through her.

"Yes," she whispered, her voice sultry and thick with anticipation. "I have. So, are you going to claim your prize?"

He didn't need to respond with words. His actions spoke volumes as he reached down, gripping the zipper of his suit and pulling it down with a decisive motion. His cock sprang free, thick and ready, the sight of it making Ivy's lips part in a silent gasp.

Batman grasped her by the hair, pulling her head back, exposing the delicate column of her throat. He leaned down, his lips brushing against her ear. "I'm going to fuck you, Ivy. Hard and rough, just how you like it."

She moaned, her eyes fluttering closed as he yanked her to her feet, his hands roaming over her body, claiming every inch of her. His fingers found the hem of her costume, tearing it away to reveal her perfect, naked form. Her breasts were full and ripe, her nipples hardening under his gaze.

With a swift motion, Batman spun her around, bending her over a conveniently placed lab bench. Her long legs were spread, her glistening pussy on full display, inviting him in. He positioned himself behind her, the head of his cock teasing her entrance, coating himself in her arousal.

"Beg for it, Ivy," he demanded, his hand coming down on her ass with a sharp slap that echoed through the lair.

"Please, Batman," she gasped, her voice quivering with need. "Fuck me. I need your cock inside me."

He obliged, thrusting into her with one powerful movement. She was wet and tight, her walls clenching around him as he began to move, setting a punishing rhythm. With each thrust, he pulled her hair, the slight sting of pain only heightening her pleasure.

Ivy pushed back against him, meeting his every stroke, her cries of ecstasy filling the air. Batman's hand traveled up her spine, his fingers wrapping around her throat, not to choke, but to assert his dominance, to feel the pulse of life that thrummed beneath her skin.

The sound of their flesh slapping together mingled with their heavy breathing, a symphony of raw, unbridled sex. Batman's other hand snaked around her hip, finding her clit, pinching and rolling it between his fingers, eliciting a scream of pleasure from Ivy.

"You're mine, Ivy," he grunted, his thrusts becoming more frenzied, more desperate.

"Yes, yes," she moaned, her body tensing as she reached the precipice of her orgasm.

Batman felt her pussy contract around his cock, the waves of her climax milking him, driving him over the edge. With a final, powerful thrust, he buried himself deep inside her, his cock pulsing as he emptied himself, marking her as his own.

They remained locked together, their bodies slick with sweat, their breaths ragged. Batman released his grip on her hair, placing a gentle kiss on the nape of her neck before pulling out. Ivy straightened, turning to face him, her green eyes sparkling with a mix of satisfaction and mischief.

"That was... a pleasant defeat," she purred, running a finger down his chest.

Batman smirked. "You shouldn't have challenged me, Ivy."

She shrugged, a playful smile tugging at her lips. "Maybe not. But I must admit, I'm rather pleased with the outcome."

He stepped back, his gaze lingering on her for a moment longer before he turned to leave. "Next time, Ivy, it might not end so... pleasantly for you."

As he disappeared into the shadows, Ivy couldn't help but smile to herself. She knew there would be a next time.