He dominates her

With each powerful thrust, Sasuke's words echoed in Kyubi's mind, "You're nothing more than a breeding sow for me." His cock plunged into her mouth, stretching her jaws wider, filling her with a sense of degradation that only added to the intense pleasure coursing through her body. She felt a part of her intelligence slipping away with every moan she muffled around him, her thoughts becoming hazier, more primal. Kyubi's eyes glazed over, no longer the sharp, calculating gaze of a powerful demoness, but the dulled stare of a creature solely focused on pleasuring its master. Her cheeks hollowed as she took him deeper, the tip of his cock brushing the back of her throat, and she found she didn't mind the loss of control. In this moment, she was nothing but a vessel for his seed, a mere instrument of his will. Her tongue swirled around his length, her movements becoming more instinctual than deliberate, driven by the primal need to serve and be filled by the Uchiha's potent power. Her own desires were secondary now, her consciousness fading into the background as the promise of motherhood and the intoxicating taste of his dominance took over. Her mind was his, as was her body, and she reveled in the depraved joy of being reduced to a mere breeding tool for his legacy.

Sasuke's grip tightened in Kyubi's hair as he pushed his cock deep into her throat, her nose buried in the coarse, damp nest of his pubic hair. Kyubi's eyes watered, but she didn't pull away, the pressure and the feel of his power only adding to the strange, exhilarating sensation building within her. He had claimed her as his breeding ground, and she was eager to show her submission. Her throat convulsed around his length as she deep-throated him, the sound of her gagging muffled by the thickness of his shaft. Sasuke watched, his own breaths coming in short pants as he enjoyed the sight of her struggling to accommodate him, her eyes bulging slightly with each thrust. He knew she could take more, and with a growl of approval, he pushed deeper still, filling her until she couldn't breathe, until she was nothing but a vessel for his pleasure. The electric current of his Raiton chakra pulsed through him, heightening every sensation, every touch, every gasp from Kyubi's stretched throat. This was it—the moment where she truly became his, body and soul. He felt her gag reflex give way, and she took him even deeper, her throat muscles tightening around him in a display of both obedience and need that had him on the edge of his own release. His hips bucked, his cock hitting the back of her throat with a wet smack, and he knew it was time. "Swallow," he commanded, and Kyubi obeyed, her throat muscles working to draw him in even further, her eyes never leaving his as she did so, her own chakra mingling with his, signaling her acceptance of their new dynamic.

With a roar of pleasure, Sasuke released his hot, potent semen into Kyubi's eager throat. She swallowed greedily, her eyes watering, her cheeks flushing with the **** of his climax. As he withdrew from her mouth, he stared down at her, his Sharingan activating. The crimson spirals spun rapidly, locking onto Kyubi's pupils and invading the very core of her being. He watched as her irises flickered and changed, the fiery determination of the demoness giving way to a dull emptiness that grew more pronounced with every pulse of his chakra. He had claimed her, not just physically, but mentally as well. Her personality was being rewritten, transformed into a creature of lust and servitude, a whore for his pleasure and the continuation of the Uchiha line. Kyubi's gaze remained on his, though now it was filled with a new kind of submission, one that went beyond the physical. She was his, utterly and completely, her very soul bound to his will. Sasuke smirked as he reached down and stroked her cheek, feeling the tremble of her chin from the **** of his release still pulsing through her. "Good girl," he praised, his voice thick with satisfaction. "Now, let us see what kind of mother you'll make." And with that, he turned her around, positioning her on her hands and knees, ready to plant his seed deep within her fertile womb, eager to claim her fully and irrevocably as the breeding ground for his legacy.