A guttural cry tore from Dagnija’s throat, raw and unpracticed. Her right arm, a petrified limb of useless stone, throbbed with a dull ache, but her left, the one still capable of precise movement, plunged into the crimson pool beside Ignat. She scrabbled for the glass ampoule of marrow-graft extract, her vision blurring, the acrid stench of spilled viscera and hot blood filling her nostrils. His chest rose and fell in faint, ragged gasps, each one a fading echo. The lamp’s flickering light caught the rime of ash-gray on her lips, a stark reminder of the encroaching petrifaction, now creeping insidiously towards her lungs. “Ignat,” she rasped, the name a fragile plea. She clutched the precious vial, its contents a viscous, pale gold, feeling its cool weight. The choice was clear, brutal in its simplicity: her life, or his. A chilling logic, cold as the river that wound beneath the High Institute, presented itself. She was the one who could synthesize, who could wield the subtle forces of flesh-crafting. If he died, the marrow fluid would be meaningless, its secrets lost. But the thought curdled in her gut. He had taken the blade for her. He had sworn to burn the city. He had loved her, in his own sharp, infuriating way. She wouldn’t let him become another ghost in her labyrinthine memories. “No,” she choked out, her voice cracking. “Absolutely not.” Dragging him was a grotesque, brutal ballet. She hooked her left arm under his shoulders, his weight a dead mass, heavy and unyielding. Each shuffling step across the slick, fog-damp cobblestones was an agony, her left leg protesting, threatening to lock up entirely. The subterranean river, usually a distant murmur, roared closer now, its oily surface reflecting the scattered gaslight. She imagined the iron chains of the Sanctorum’s bridge, cold and unforgiving. The journey felt endless, a descent into a nightmare of her own making, punctuated by Ignat’s fading breaths. Finally, the iron latticework of the bridge loomed, its ornate carvings barely visible through the thick vapor. She hauled Ignat’s limp form onto the first cold plank, the clatter echoing in the oppressive silence. The wind, a biting maw, whipped at her face, carrying the metallic tang of the river. Her lungs burned, a tightening constriction in her chest, each inhalation a thin, desperate gulp. The gray rime on her lips intensified, her vision tunneling. *Not yet, not yet,* she silently commanded her failing body. *Just a little further.* She leveraged his body, step by arduous step, her knuckles white, her teeth gritted against the rising tide of pain. The Institute doors, massive and grim, seemed impossibly far, then suddenly, they were there. With a desperate heave, she managed to roll Ignat’s unconscious form through the entrance, collapsing beside him, gasping for air that felt like lead. Time was no longer a flowing river, but a rapid, an uncontrollable cascade. She had hours, perhaps less, before the calcification seized her lungs entirely. Her right arm hung, a useless stone club, but her left still held the ampoule. She had to try. The Dual-Graft. A forbidden technique, a theoretical marvel, splitting a single, potent marrow concentrate to address two distinct, critical conditions simultaneously. It was a dance on the edge of the impossible, using the same fluid to synthesize a trauma-serum for Ignat and her own anti-petrifaction cure. To attempt it with one functional arm, against the clock, while battling her own encroaching death… it was madness. She moved with a frantic, desperate grace, her left hand a blur of motion. She cleared a space on a workbench, her eyes scanning for the necessary reagents, the precise instruments. The stolen centrifuge Milena had provided sat waiting. She cracked open the ampoule, the pale gold liquid shimmering, and carefully, meticulously, divided it into two separate, gleaming vials. One for him, one for her. Each held the promise of salvation, or the certainty of their shared doom. Her left hand, trembling but precise, began the complex preparation. She drew Ignat’s blood, spun it, combined it with a portion of the marrow solution, catalyzing a rapid-action trauma-serum designed to repair the devastation of his impaled lung. Her brow beaded with sweat, the pain in her chest a constant, crushing presence. Then, she prepared her own, a slower, more intricate blend, a true anti-petrifaction cure that would target the unique toxin in her system. The process demanded unwavering focus, every nerve ending screaming in protest. She ignored it, her mind a fortress of clinical detachment. She worked quickly, her breathing rasping and erratic. The first vial, Ignat’s trauma-serum, shimmered with a faint, iridescent glow. She injected it directly into his jugular, watching, praying, for a sign. A dry cough, a twitch of his eyelids – nothing. She moved to her own cure. The needle plunged into the crook of her elbow, the solution burning as it entered her veins. Dizziness struck her skull, tilting the room on its axis. She leaned against the cold metal of the workbench, fighting for consciousness. Then, a deafening explosion ripped through the air. The heavy, reinforced doors of the High Institute’s main entrance splintered inward, torn from their hinges with a shriek of tortured metal. Dust and debris rained down, momentarily obscuring the figures framed against the swirling fog. “There!” a voice roared, thick with vindictive triumph. Casimir Vlas, bruised, disheveled, but undeniably alive, emerged from the dust cloud, flanked by a phalanx of steel-clad Praetors. Gas-powered rifles, their barrels glinting menacingly, were already raised. “Dagnija Rostova!” Casimir shrieked, his voice raw with fury. “And Ignat Zverev! For alchemical heresy, for illegal flesh-crafting, and for the murder of my father, I demand immediate execution!” Four Praetors stepped forward, their rifles locking onto Dagnija. The gas-cylinders hissed as they armed their weapons. She stood, paralyzed from the waist down, her right arm a useless pillar of stone, her left hand still clenched from the injection. She could only watch, a statue awaiting its shattering. The metallic click of the Praetors’ rifles echoed in the cavernous hall. Just as the first rifle fired, Dagnija’s stone-like right arm suddenly fractured, the gray ash shattering away to reveal perfectly regenerated, glowing flesh beneath.