You will feel no pain," Alistair said, his voice a calm and steady narrative, a professor guiding his students through a profound experiment. "The blade does not seek to harm. It seeks to divide. It will find the metaphysical thread that holds your consciousness and your body together, and it will sever it."

​The Schism touched them. There was no resistance, no struggle. Only a soft, hissing whisper as the silver disc passed through their bodies, a seamless, elegant division. For a moment, their bodies shimmered, a faint, ethereal glow outlining their separated halves. They were two, and yet they were still one.

​Tinbunny, who had been holding her breath, let out a nervous, surprised laugh. The sensation was profoundly different from her previous experience.

When Nightshade had used Alistair's old buzzsaw, she had felt a violent, visceral tearing, a metaphysical scream as her body was cleaved. This was... a gentle unraveling. "It's different!" she gasped, her voice full of awe and a strange, profound relief. "It doesn't tear! It just... unweaves!"

​Nightshade, on the other hand, felt only a profound, chilling absence. She had braced herself for the metaphysical impact, the jolt of resistance she had grown accustomed to in her duels. Instead, there was a quiet, shocking void. A sudden silence in the deepest parts of her being, a clean, elegant parting of self that left her unnerved and violated. She felt not pain, but a cold, intellectual terror.

​Alistair watched, his face a mask of profound, intellectual satisfaction. "The consciousness is intact," he said, almost to himself. "The neural pathways, the bio-etheric field… all remain whole, despite the division of the physical form."

​He gestured with a single hand, but instead of splitting the table, a new, more sinister light shimmered in the air. "But a simple division is hardly a full test of the Schism's capacity. A blade that can unweave can also re-order."

​Alistair's smile became a sharp, predatory curve. "Nightshade, your elegant arrogance must be met with a new form. Tinbunny, your chaotic apprehension, a new alignment. The Schism will now reconfigure the output."

​With a soft, ethereal hum, the two lower halves of their bodies detached, floating a fraction of a inch above the table. Nightshade's lower half, encased in her striking black and purple latex, drifted soundlessly to the right. Tinbunny's silver-clad lower half drifted left. They swapped places, a perfect, elegant ballet of disembodied matter.

​The two lower halves then reconnected to their new upper halves with a soft, magnetic click. Nightshade's torso was now seamlessly attached to Tinbunny's legs. Tinbunny's torso was now connected to Nightshade's legs.

​Nightshade’s eyes, wide with shock, stared at her new, silver-clad legs, her perfectly tailored bodysuit now a ludicrous half-and-half. The long black hair of her head lay against the silver fabric, and her expression was one of absolute, unyielding violation. She felt the difference instantly. Tinbunny's legs were not just a different color; they were a different weight, a different feel. It was an assault on her very identity, a violation far more profound than any physical cut.

​Tinbunny, on the other hand, let out a nervous, high-pitched giggle as she stared at her new, long, black latex-clad legs. Her expression was a mix of shock and a strange, morbid amusement. She felt the power and the confidence of Nightshade's legs, a thrilling, alien presence that filled her with a chaotic energy.

​Alistair's face was a mask of triumph. He stood back, admiring his work with the grim satisfaction of a sculptor who had just created a disturbing new form. "An unexpected, yet entirely logical, outcome," he said, his voice low and academic. "The essence of a dual subject, reconfigured. The test is a success." He let them lie for a moment, letting the full weight of their new forms sink in.

​Before he could continue, a sharp, authoritative voice cut through the air. "Alistair! Demonic incursion! Lincolnshire! Now!"

​He stiffened, his cold, intellectual facade cracking with a jolt of urgency. His eyes, still gleaming with triumph, flickered to the door where Stephanie's voice had come from, and then back to the two women, lying in four pieces.

"My apologies, ladies," he said, his voice hurried but still retaining a hint of his signature elegance. "A demonic vampire has risen in Lincolnshire. I must deal with this immediately. It is a matter of… professional courtesy."

​He gave them a final, piercing look, and with a soft hiss, the Schism returned to its hovering position, its surface pristine and unsullied. "Do not worry. One of the new apprentices will be with you shortly to restore you.

The blade is yours. The arbitration is complete. You have a formidable new tool for your collective ventures. Do try to remain calm until the apprentice arrives. You are, after all, a single unit now. For the time being, at least."

​And with that, Alistair Graves turned on his heel and strode from the chamber, leaving Nightshade and Tinbunny to their new, bizarre reality.

​The quiet hum of the workshop returned, the only sound the faint, confused pulse of the dying shield and the low, rhythmic thrum of the Schism hovering silently above them.

​For a long moment, there was a profound silence as Nightshade and Tinbunny lay in their new, bizarre reality. Tinbunny was the first to speak, her voice a nervous, high-pitched giggle as she stared at Nightshade's legs. "They feel... powerful," she breathed, wiggling her new, black-latex clad toes. "Like a spreadsheet come to life. Organized chaos!"

​Nightshade, on the other hand, felt no such amusement. She stared at her own silver-clad legs with a look of utter, unyielding violation. "This is a disgrace," she snarled, her voice a low, furious growl. "I look..."

Many thanks to @Nightshade-QOV and @HenchwomanTinbunny