The soft hum of the Plantation’s life support systems was a familiar lullaby, a distant murmur against the backdrop of their shared, quiet room. Outside, the artificial sky of the dome shimmered with the gentle glow of simulated stars, but inside, only the faint, warm light of a bedside lamp chased away the shadows. Hiro lay on their bed, watching Zero Two. Her back was to him, her distinctive `pink hair` a waterfall of vibrant color cascading over the delicate curve of her shoulders as she stared out the viewport. Even in her stillness, there was an electric energy to her, a predatory grace that never quite left her, even in moments of peace.

He remembered the day they met, the way she had invaded his world, shattering its monotonous gray with her audacious spirit and her tantalizing scent. Their journey, fraught with danger and discoveries, had forged an unbreakable bond, a connection so profound it transcended the physical. Yet, the physical was undeniably a part of it, a simmering undercurrent of desire that had only intensified with every shared glance, every lingering touch, every whispered 'Darling'. Tonight, that current felt stronger than ever, thrumming in the air between them, thick and palpable.

Zero Two turned, her head tilted slightly, catching his gaze with those mesmerizing, reptilian eyes that held ancient wisdom and childlike mischief in equal measure. A slow, knowing smile curved her lips, a smile that promised both sweetness and delightful torment. "Thinking about something, Darling?" Her voice, a low purr, sent a shiver down his spine. He knew that tone. It was the sound of a predator playing with its prey, but in their context, he was always a willing captive, eager for whatever exquisite fate she had planned for him.

"Just… you," Hiro admitted, his voice a little hoarse, betraying the sudden acceleration of his heartbeat. He pushed himself up, resting on his elbows, watching her. She moved towards him, not with urgency, but with a deliberate, languid grace, each step a sensual dance. The thin, silken nightdress she wore clung to her curves, hinting at the powerful, beautiful body beneath. As she drew closer, the scent of her—sweet and wild, like cherry blossoms and ozone—enveloped him, making his head swim.

She perched on the edge of the bed beside him, her long legs brushing against his. Her hand, cool and soft, reached out to cup his cheek, her thumb stroking gently. Her eyes searched his, a flash of vulnerability mixed with her usual confidence. "You look like you're dreaming of something… deep, Darling." Her voice dropped to a near whisper, sending a thrill through him. The `Darling In The Franxx` legacy was one of profound connection, and theirs was the deepest of all.

Hiro reached up, his fingers entwining with the vibrant strands of her `pink hair`, letting it spill over his hand like silk. "I'm dreaming of you, Zero Two. Always you. And tonight… tonight I want to make those dreams real." He felt the tremor that ran through her at his words, a subtle shift in her posture that told him his desire was mirrored. She leaned in, her lips brushing against his, a feather-light touch that promised so much more. Their breath mingled, warm and sweet, and the world outside their intimate bubble faded away.

Their first kiss was tender, hesitant at first, a slow exploration of lips and tongues, tasting each other with a longing born of years of unspoken passion. Then, Zero Two’s innate wildness took over. Her hands tangled in his hair, pulling him closer, deepening the kiss until it became a hungry, desperate claim. He responded with equal fervor, his hands sliding around her waist, pulling her onto the bed, until she straddled his hips, her warm weight pressing deliciously against him.

Her nightdress, an obstacle now, was quickly shed, discarded to the floor with a soft rustle. Hiro’s eyes devoured her. The pale, luminous skin, the delicate curves of her waist, the proud swell of her breasts, tipped with soft, inviting nipples. And then, his gaze lingered on the magnificent curve of her lower back, leading down to the undeniable, glorious prominence of her `big ass`. It was a perfect, round canvas, sculpted by nature and imbued with an almost gravitational pull that drew his hands to it instinctively.

He cupped her buttocks, feeling the soft, resilient flesh yield beneath his palms. His thumbs stroked the valley between them, sending a jolt of electric sensation through her. Zero Two gasped, a low, throaty sound that ignited a primal fire in Hiro’s loins. She leaned back, her `pink hair` fanning out around her as she arched her back, offering herself to his gaze, to his touch. "You like what you see, Darling?" she purred, her eyes half-lidded with burgeoning desire.

"More than like," Hiro breathed, his voice thick with adoration. He ran his hands up her thighs, tracing the smooth skin, feeling the subtle tremor of her muscles. She shifted, grinding her hips against his erection, a delicious friction that made him groan. Her clit, already swollen and wet, pressed against his jeans, teasing him mercilessly.

Zero Two’s eyes gleamed with mischief and hunger. "Good. Because I want to feel your hands all over me tonight. Everywhere." She leaned down, her mouth trailing a searing path from his neck to his chest, her tongue flicking, tasting his skin. He arched into her touch, his body humming with anticipation. Her fingers, long and nimble, went to the waistband of his pants, expertly unbuttoning and unzipping them. With a practiced ease, she stripped him, discarding his clothes to join hers on the floor.

Now, skin against skin, the heat between them intensified to an almost unbearable degree. Zero Two’s hips began to move in a slow, sinuous grind against his erection, her `big ass` swaying with a hypnotic rhythm. Hiro wrapped his arms around her, pulling her closer, burying his face in her neck, inhaling her intoxicating scent. Her moans grew louder, more unrestrained, as he began to gently squeeze and knead the luscious curves of her backside.

"Oh, Darling… that feels so good," she whimpered, her voice strained with pleasure. She broke their kiss, leaning back just enough to look at him, her eyes dark with passion. "I want you inside me, Hiro. Deep. Now."

He shifted, rolling her onto her back, her `pink hair` splayed across the pillows like a vibrant halo. He hovered above her, looking down into her eager face, her mouth slightly parted, her breath coming in ragged gasps. He leaned down, kissing her softly, deeply, letting his body press against hers, feeling the hot, wet promise of her core against his throbbing shaft. He slid a finger down, parting her glistening folds, feeling the intense heat and wetness that greeted him. She was ready, more than ready.

Slowly, deliberately, he guided himself to her entrance, easing the tip of his erection against her slick opening. Zero Two arched her back, a soft cry escaping her lips, urging him on. He pushed, slowly, carefully, feeling her tighten around him. Her muscles clenched and relaxed, molding to his shape. He heard her sharp intake of breath as he breached her, and then, with a deep groan of his own, he sank into her fully, completely. She was incredibly tight, exquisitely hot, and he felt every inch of her embrace him.

"Oh, Hiro… Darling!" she gasped, her eyes wide with pleasure, her body trembling beneath him. Her legs wrapped around his waist, pulling him deeper still, grinding her hips up to meet his thrusts. He began to move, slowly at first, savoring the feeling of being utterly consumed by her. Her moans filled the room, a symphony of pure, unadulterated pleasure. Each thrust brought a new wave of sensation, a deeper connection that went beyond the physical, touching their very souls.

Their rhythm quickened, becoming a frantic, desperate dance. Hiro pushed deeper, faster, his hips slamming against hers with primal urgency. Zero Two met him thrust for thrust, her `big ass` lifting and falling with each movement, creating a mesmerizing spectacle of flesh and passion. Her `pink hair` became tangled in his hands as he grasped her head, pulling her into a fierce, passionate kiss, their tongues intertwining as their bodies fused.

"I love you, Zero Two," he whispered against her lips, the words torn from his chest amidst his gasps. "I love you so much."

"And I love you, my Darling," she panted back, her voice thick with emotion, her eyes shining with unshed tears of joy. "More than anything."

As their passion reached a fever pitch, a new desire, a deeper craving, ignited within Zero Two’s eyes. She pulled back slightly, looking at him with an intensity that made his breath catch. "Darling," she whispered, her voice husky, "I want to feel all of you. Every part. I want to feel you here." Her hand, trembling slightly, reached back, tracing a path over her `big ass` to the small, puckered opening just above her slick, wet entrance. Her suggestion, unspoken but clear, sent a jolt of shock and intense excitement through Hiro.

He stared at her, then back at the inviting crease of her backside. `Anal`. It was a new frontier, a deeper intimacy, a complete surrender. His heart hammered in his chest, a mix of apprehension and overwhelming desire. He looked into her eyes, searching for any doubt, any hesitation, but found only eager anticipation, a fiery challenge that only Zero Two could offer.

"Are you sure, Zero Two?" he asked, his voice barely a whisper, his breath catching in his throat.

She nodded, a fierce, determined glint in her eyes. "With you, Darling, I'm sure of everything. I trust you. I want to feel you fill me completely."

Taking a deep, shaky breath, Hiro pulled himself partially out of her, the sudden absence making her whimper in protest. He reached for the small bottle of personal lubricant they kept nearby, a necessity for their more adventurous moments. He poured a generous amount onto his fingers, then gently, carefully, began to work it onto her tight, virgin entrance. Zero Two’s hips tensed, a nervous tremor running through her, but her gaze never left his, her trust absolute.

He massaged the sensitive area, feeling it slowly begin to relax under his touch, slick with the warm gel. Zero Two’s breath hitched, her fingers digging into his shoulders, her body arching slightly. He slid one finger in, slowly, carefully, feeling the exquisite tightness, the delicate puckering of the muscle. Zero Two gasped, a mix of discomfort and burgeoning pleasure. He rotated his finger, allowing her to adjust, letting her body acclimate to the new sensation. Then, he added another, gently stretching her, preparing her for him.

"Relax, my love," he murmured, kissing her forehead, her `pink hair` brushing against his cheek. "Just breathe with me."

After a few moments, feeling her body start to soften and open, Hiro slowly, agonizingly slowly, began to guide himself towards her backside. Zero Two’s whole body was rigid with anticipation now, her breath coming in short, sharp gasps. He leaned down, kissing her, trying to distract her, to comfort her. The tip of his erection, slick with lube, pressed against her tightly clenched entrance. He pushed gently, inch by agonizing inch, feeling the incredibly intense resistance of her muscles.

A soft cry tore from Zero Two’s throat as he breached her, a raw sound of both pain and profound sensation. He stopped, holding still, letting her body adjust to the invasion. Her `big ass` quivered under him, her internal muscles clenching tightly around him, a new, intense pressure. "Take your time, Darling," she whispered, her voice strained, but laced with an undeniable thread of eagerness. "I want it. Don't stop."

Encouraged, Hiro began to push again, slowly, painstakingly. He felt her muscles stretch and yield, the incredible tightness giving way to a new kind of embrace. He drove deeper, past the initial hurdle, into the warm, slick tunnel. Zero Two cried out again, a long, drawn-out moan this time, her body arching off the bed, her hands gripping his back, her nails digging in. He finally sank into her fully, feeling himself completely embedded in her, a sensation unlike anything he had ever experienced.

He gasped, his own body trembling from the intensity. She was so incredibly tight, so full, so utterly consuming. He could feel her clenching around him, her core contracting. Zero Two’s hips were now rising to meet him, instinct taking over. He began to move, slowly at first, careful of her newness to this sensation, but quickly finding a rhythm as her body began to accept and even welcome him. Each thrust was an exquisite friction, a deep, powerful sensation that went straight to his core.

"Oh, Darling… yes… just like that," she panted, her voice filled with a raw, guttural pleasure. Her `big ass` swayed with each of his thrusts, lifting and falling, a rhythmic dance of pure eroticism. He saw her eyes roll back in her head, her mouth agape in a silent scream of ecstasy as he found a spot deep inside her that made her moan with renewed fervor. Her `pink hair` was damp with sweat, clinging to her temples as she buckled beneath him.

He leaned down, kissing her feverishly, tasting the salt and sweetness of her skin. "You feel incredible, Zero Two. So good. So tight."

She whimpered, her legs wrapped around his waist, pulling him in closer, wanting more. "Fill me, Darling. Fill me completely. I want to feel every inch of you, all the way inside." Their pace quickened again, their bodies slick with sweat, slapping together with a primal rhythm. Each deep thrust brought a new wave of pleasure, building higher and higher, a crescendo of pure, unadulterated passion. Her nails dug into his back, leaving faint red marks, a testament to her pleasure.

Zero Two’s moans became ragged, desperate pleas, her body trembling uncontrollably as she neared her climax. He felt the intense clenching of her muscles around him, the exquisite pressure building. He gritted his teeth, pushing deeper, harder, wanting to shatter with her, to feel their souls intertwine in this ultimate act of surrender and love. With one final, powerful thrust, he felt her shudder violently beneath him, a powerful orgasm wracking her entire body. Her cries turned into choked sobs of pleasure, her body spasming around him.

Moments later, with a guttural roar, Hiro released himself into her, a torrent of hot, pulsing semen filling her tightly clenched depths. He collapsed onto her, his body heavy, utterly spent, his heart hammering against her chest. Zero Two wrapped her arms around him, holding him tight, her `pink hair` tangled around his face, her body still trembling from the aftershocks of her orgasm. They lay there for a long time, their breathing ragged, their bodies intertwined, the scent of their lovemaking filling the air.

As their heart rates slowly returned to normal, Zero Two shifted slightly, her head resting on his shoulder. "That was… incredible, Darling," she whispered, her voice still a little breathless, a satisfied smile gracing her lips. "More than I ever imagined." She felt him deep inside her, the comforting warmth of his presence filling her, making her feel utterly complete. Her `big ass`, still tingling from the intensity of their encounter, now settled comfortably against the bed.

Hiro kissed the top of her head, burying his face in her `pink hair`. "Only with you, Zero Two. Only with you could it be like this." He felt a profound sense of peace and belonging, a completeness that only she could bring. Their journey in `Darling In The Franxx` had been tumultuous, but every challenge had only deepened their bond, leading them to this moment of absolute, unbridled intimacy.

They lay tangled together, the artificial stars outside their viewport twinkling softly. The air was cool against their cooling skin, but the warmth between them was palpable, a lingering ember of their fiery passion. Zero Two nestled closer, her arm thrown across his chest, her fingers tracing idle patterns on his skin. He held her tight, knowing that with her, every experience was an adventure, every moment a revelation. Tonight, they had transcended boundaries, exploring the deepest reaches of their desires, solidifying a love that was as wild and untamed as Zero Two herself, a love that would forever burn bright in the heart of their world.