## Chapter 5: The Beast Within
Pain and confusion coursed through Claire's veins, a tumultuous storm of sensations as the B-Virus and G-Virus clashed within her. Her body trembled, muscles spasming as the transformation intensified. She could feel the G-Virus taking hold, merging with the B-Virus in a chaotic symphony of power and mutation. Her vision blurred, the room around her spinning as she struggled to stay on her feet.
William Birkin's monstrous form loomed before her, his eyes blazing with malevolent glee. He lunged at her, claws outstretched, but Claire was ready. She sidestepped his attack, her movements fueled by a newfound strength. She could feel her body growing, the sensation both exhilarating and terrifying. Her muscles bulged, skin stretching as she expanded, her height surpassing fifteen feet.
The room seemed to shrink around her, the walls pressing in as her body continued to grow. Claire's mind was a whirlwind of emotions—fear, anger, and something darker, more primal. She could feel her humanity slipping away, replaced by a bestial instinct that urged her to dominate, to destroy. She fought to maintain control, but the viruses within her were relentless, their influence spreading like wildfire.
Birkin roared in fury, launching himself at her with renewed ferocity. Claire met his charge head-on, her massive fists swinging with bone-crushing force. She felt a thrill of power as her blows connected, the sensation of her strength overwhelming. Each punch sent shockwaves through Birkin's mutated form, his snarls of pain and rage echoing through the lab.
As they clashed, Claire's body continued to grow. Her clothes were now nothing more than tattered remnants, her skin exposed and glistening with sweat. She could feel the floor trembling beneath her feet, the room struggling to contain her expanding form. Her height neared eighteen feet, her muscles rippling with every movement. The walls seemed to close in, the ceiling pressing down as her head brushed against it.
A deep, guttural growl escaped Claire's lips, her mind teetering on the edge of a primal abyss. She felt a wave of fury wash over her, the accumulated tension and fear transforming into a burning need to dominate. She grabbed Birkin by the throat, lifting him off the ground with ease. Her fingers tightened, the sensation of his flesh yielding beneath her grip both satisfying and disturbing.
Birkin's eyes widened in shock and pain, his struggles growing weaker as Claire's grip tightened. She could feel her body swelling with power, the combined influence of the B-Virus and G-Virus pushing her to new heights. Her muscles bulged, her skin stretching to accommodate her increasing size. The floor groaned under her weight, cracks spiderwebbing across the concrete.
With a primal scream, Claire slammed Birkin into the ground, the impact shaking the entire room. She felt a surge of exhilaration, the thrill of her power intoxicating. But beneath the surface, a flicker of apprehension remained. She could feel her mind slipping further into the abyss, the line between human and beast blurring with each passing second.
Birkin's body lay crumpled at her feet, his once formidable strength no match for her newfound power. Claire's breath came in ragged gasps, her heart pounding as her body continued to grow. She could feel the floor buckling beneath her, the room struggling to contain her massive form. Her height approached twenty feet, her muscles straining against the confines of the space.
The floor finally gave way with a deafening crash, the concrete collapsing under the weight of Claire's immense body. She felt herself falling, the sensation both terrifying and exhilarating. Birkin's form tumbled alongside her, the two of them plummeting into the darkness below.
As they fell, Claire's mind was a maelstrom of conflicting emotions. The power surging through her veins was intoxicating, a dark temptation that threatened to consume her. She could feel the lust for domination, the primal urge to crush and destroy. But amidst the chaos, a flicker of humanity remained, a desperate desire to hold on to who she was.
The ground rushed up to meet them, the impact sending shockwaves through her massive form. She lay there, panting, her body trembling as the transformation continued. She could feel the viruses battling within her, the struggle for dominance playing out in her very cells.
As Claire lay in the rubble, her body still expanding, she knew that the battle was far from over. She would have to find a way to control the monstrous power within her, to harness it without losing herself completely. The darkness threatened to overwhelm her, but she clung to the hope that she could find a way to survive, to save those she loved from the nightmare she had become.