A profound silence hung in Rimuru's room, thick with unspoken emotions. Rin's gaze, momentarily, fell upon Rimuru's newly formed cleavage, a hint of excitement stirring within him, quickly suppressed. He held back, sensing the delicate balance of the moment.
Within Rimuru's mind, a familiar figure materialized: her former self, the male human, Satoru Mikami. He stood before her, a faint, nostalgic smile on his face. "Are you truly ready to let me go, Rimuru?" Satoru's voice, a echo from a past life, resonated in her consciousness.
As Satoru spoke, Rimuru found herself reaching out, her hand gently tracing the contours of Rin's face. Slowly, inexorably, she leaned closer. I am ready, Rimuru declared in her mind, her resolve firm. I am ready to let go of my past. She had been a man in her previous existence, but now, she was undeniably, biologically, a woman. A real woman, capable even of bearing children. She accepted this new reality, this new self. As her acceptance solidified, the image of Satoru Mikami faded, dissolving into the recesses of her memory.
At that very moment, Rimuru pressed her lips against Rin's.
Rin was momentarily stunned. Despite his Mind Reader, Rimuru's thoughts had been a whirlwind, a chaotic storm of self-realization that had defied his ability to fully comprehend for a few fleeting seconds. But the kiss… that was undeniable. Question: would you… kiss a woman who was once a man? The thought, an echo of common societal norms, flickered through his mind. Many people with common sense and decency would say this is... different. But Rin, ever the pragmatist, devoid of such 'common sense' or 'decency' in matters of the heart (or perhaps, lust), felt only one thing: an undeniable pull. He reciprocated the kiss, his lips meeting hers with a newfound intensity.
Rimuru was overwhelmed. The sensation was exquisite, a rush of pure sensation that coursed through her as she fully embraced her new identity and her burgeoning feelings for Rin. She didn't know precisely when her feelings for him had blossomed, but ever since their first encounter, he had piqued her curiosity like no other. The shared origin from the same world, the familiarity of their past lives, had drawn her inexorably closer. Now, she let go of all inhibitions, surrendering to the overwhelming current of the moment.
As their kiss deepened, Rin's hand instinctively found its way to Rimuru's breast. A jolt, a wave of heightened sensitivity, coursed through Rimuru. Her system, as if in tune with her evolving needs, seemed to subtly adjust, amplifying her every sensation. Rin, operating on pure muscle memory despite knowing Rimuru's previous genderless state, moved his hand lower, towards her core. He was genuinely surprised to find a fully formed vagina.
The discovery made him break the kiss, pulling back slightly to gaze at her, a mixture of shock and fervent desire in his eyes. He quickly accessed her status. Rin was utterly stunned: biologically female slime, capable of pregnancy. This evolutionary path was bewildering, a mystery of magic and biology intertwined.
Rimuru, her face flushed, her eyes half-lidded with arousal, leaned in, her voice a seductive whisper in his ear. "Ravage me, Rin."
Rin hesitated no longer. With a primal roar that resonated with his raw masculinity, he pressed himself against her, revealing the undeniable evidence of his excitement. Rimuru, a wave of shyness washing over her, couldn't help but compare his potent arousal to the subtle stirrings of her former male body. But the thought was fleeting, unimportant now. Her current reality was all that mattered.
Unable to hold back, Rimuru, with a shy, embarrassed blush coloring her cheeks, slowly parted her legs. She couldn't believe she was doing this, yet here she was, her body trembling with anticipation. Rin could see the raw excitement in her eyes, feel the warmth and wetness that now enveloped her. The mystery of her transformation into a woman vanished from his mind, replaced by an overwhelming urgency.
He quickly reviewed Rimuru's status one last time. Her 'Romantic Love' towards him was already at 95, a testament to the powerful, inherent connection they shared, even without his direct manipulation. Rin, seizing the moment, increased her 'Loyalty,' 'Trust,' and 'Masochistic Tendency' towards him to 95.
As he plunged himself inside her, a wave of sensation unlike anything Rimuru had ever known washed over her. She climaxed instantly, a shattering, exquisite release that was utterly new. This was her first climax as a woman. Rin's rhythmic movements, sliding in and out of her, intensified the pleasure, driving her to climax again and again. As time seemed to warp and dissolve, Rimuru found herself caught in an endless loop of unadulterated pleasure.
"Rin, please," she gasped, her voice raw with ecstasy, "make me rest."
But Rin, fueled by his desires, offered no reprieve. Yet, despite being used like a treasured toy, a profound realization dawned on Rimuru. In this moment, in this new body, she discovered another purpose, another layer to her existence in this new world. As pleasure coursed through her, overwhelming her senses, Rimuru was thankful. Truly, deeply thankful, that she had become a woman.