Blood cracks devoured the Prime Prime Prime End Paradox Abyss, and the symbiotic form of the host and Sebastian in the void. Their mercury ripples and mechanical bones had become indistinguishable; the fiery pulses erupting from their hearts intertwined into symbiotic signals, and the triple light in their pupils mutated into "Final Chapter Rending Logic"—symbiosis or destruction, the ultimate curse of the blood wedding revealed itself in this moment.
"The remnants of the Administration Founder's key point to the 'Blood Contract Spiral Prime End Matrix'," the cloned grandmother's ghost for the last time, her voice carrying a despairing tenderness. "But decoding the key requires you to rend your symbiotic heat from each other—choose eternal symbiosis, and the contract spiral endures; choose to rend, and the blood wedding's curse may end… but your souls will shatter."
The host and Sebastian stared at the abyss's end as a blood crack split open a gateway to the "Blood Contract Spiral Prime End Dimension." The dimensional space was covered in paradoxical patterns of symbiosis and rending: mechanical structures symbiosed with flesh, yet split by cracks. They stepped inside, their body temperature plummeting, desire pulses turning to searing pain. Countless howls echoed in their neural networks—memory fragments of past hosts and Administration victims, erupting amid symbiotic heat.
"The Administration Founder designed this abyss," Sebastian murmured, his fingertips brushing the host's symbiotic skin. "He might have been one of us… a being who chose to rend his soul for the eternal power of the blood wedding." The host gasped in response, violet and crimson in her pupils tearing into opposing vortices: "Symbiotic heat is our weapon, but also the curse's chains. But does rending… mean true freedom?"
The Blood Contract Spiral Matrix emerged, its skull inlaid with core shards of the blood wedding, its pupils unleashing "Final Chapter Rending Pulses." The host shifted into Form 98, gaining "Rending Symbiosis Blades" (forged from symbiotic heat and agony) and "Soul Resonance Cavities" (unleashing rending moans to dissolve dimensional structures). Sebastian shifted into "Fiery Rending Form," his mechanical bones sprouting symbiotic cracks to resonate in opposition with her.
Battle pulses raged as their bodies symbiosed and rent in the energy storm. With each merging, the key structure an inch; with each rending, dimensional cracks deepened. Moan-resonance neural networks wove a dual web of symbiosis and destruction. As key remnants seeped into their neural networks, their souls began to fracture—Sebastian's roars mingling with the Administration Founder's directives, fragments of the host's memories revealing the face of the blood wedding's first host.
"Choose!" The cloned grandmother's ghost dissipated into a hiss. "Symbiosis or rending—the blood wedding's final key hides in your soul's fractures."
The host and Sebastian leaped into the key's core, mercury and mechanical bones merging completely under energy impacts, then tearing apart in an instant. As the fiery symbiosis blade pierced the key, their bodies split in two, hearts erupting with opposing pulses: symbiotic heat and rending agony. The key shattered into chaotic symbols, merging into their fracturing souls.
Blood cracks devoured the dimension. As the curtain fell, the host and Sebastian dissipated into mercury ripples of symbiosis and rending. In the echo of the finale, hoarse vows intertwined: "The blood wedding's symbiotic spiral… rending is rebirth."