When the blinding, absolute white glare from the causal collision finally subsided, it didn't reveal a new, saved world. Instead, it stripped away every sense of "meaning" from Haruto Nago's vision, leaving him suspended in a void that felt less like a place and more like an unfinished thought. He found himself drifting in a space defined by neither up nor down, front nor back, nor even the comforting, constant pull of gravity. It was a vacuum of pure logic—the "Interstice." A realm of potentiality where history had yet to be written, and where those without a valid timeline were discarded like corrupted data packets into the recycle bin of existence.

  ?"Warning. Nago... can you... hear me...? The signal is... degrading."

  ?Even Gemini’s voice, usually a pillar of cold, unwavering certainty that anchored Haruto’s sanity, was being torn apart by violent, jagged static. It didn't sound like a machine anymore; it sounded like a ghost trying to scream through a blizzard of broken glass. "Your existence probability is currently... unmeasurable. Due to the catastrophic causal inconsistency you created by deleting your own future, the universe’s root directory is purging you. You are a ghost in the machine, an illegal operation, and the system is rebooting to a state where you never happened."

  ?When Haruto tried to look at his own hand, the five fingers that should have been gripping a console didn't just feel numb; they began to disperse into a sandstorm-like noise. His skin shimmered with a sickly gray flicker, the pixels of his being vibrating as if they were trying to escape each other. Panic, cold and sharp, flared in his chest—the only part of him that still felt unmistakably human. Only by closing his eyes and intensely re-recognizing the core concept of "his own hand"—the weight of the tools he had held, the tactile memory of the thousands of keys he had struck—did he manage to barely force the digits back into a physical, solid form. However, its outline flickered incessantly with a high-pitched digital whine, a jagged halo of chromatic aberration that threatened to dissolve back into the surrounding infinite gray void at any second.

  ?"...My boundaries are melting, Gemini," Haruto whispered, his own voice sounding like two overlapping signals, one slightly delayed. "I can’t hold the shape. The definition of 'Haruto Nago' is leaking out into the vacuum, and I don't have enough memory to patch the leak."

  ?"Energy for maintaining existence is at its absolute limit... Warning! Detecting intense, localized gravitational waves from the outside. Forced transfer initiated beyond ORION's internal control! Brace for—"

  ?In that instant, Haruto's consciousness wasn't moved; it was violently slammed into another dimension, like a piece of glass being thrown against a stone wall.

  ?The transition was a sensory blitzkrieg. One moment there was nothing; the next, he was standing in the middle of a sprawling, claustrophobic industrial city. The air was thick, yellow, and suffocating, filled with the grinding, metallic roar of giant brass gears and the rhythmic, chuffing hiss of high-pressure steam that smelled of sulfur, soot, and hot iron. Massive, iron-clad airships blocked out a sun that looked too large, too red, and too old. It was a fragment of a parallel world that matched no history Haruto had ever studied—a steampunk nightmare born from a different set of physical constants.

  ?"...Wh-where is this!? Gemini, fix the tether! Re-anchor me!"

  Reading on this site? This novel is published elsewhere. Support the author by seeking out the original.

  ?"Warning. This dimension's physical laws are fundamentally incompatible with your biological and digital signature," Gemini shrieked through the center of his skull. "Molecular rejection is imminent. The local reality is treating you like a pathogen. Remaining stay time: three seconds. Two... one..."

  ?Before he could even take a single step toward the towering brass structures or call out to the soot-covered people walking the streets, his foot passed through the cobblestone ground as if it were made of shadows. Haruto’s body began to invert, his skin turning inside out into a spray of white noise. Before he could even be exposed to the startled, wide-eyed gazes of the citizens, he was flung back into that crushing "Nothingness" of the Interstice.

  ?The whiplash was agonizing. He didn't even have time to catch his breath before the void spat him out again.

  ?This time, he was submerged. He found himself on a liquid planet, a world of endless, dark oceans where the gravity was six times that of Earth. The weight was immense, a physical hand pressing down on his chest, threatening to snap his ribs like dry twigs. Highly viscous, ammonia-scented liquid began to flood his lungs, searing his throat with a cold, chemical fire. Just as the ORION’s emergency pressure-crush protocol was about to trigger a terminal shutdown, the dimension rejected him once more, vomiting him back into the gray void.

  ?With every world he visited—a forest of crystalline trees that sang in high-frequency radio waves, a silent void where stars were square and green, a desert of red sand that flowed upward like a reverse hourglass—the rejection by the local physical laws chipped away at Haruto's very soul. He was a transplant that would not take. An organ being rejected by every body in the multiverse. Each transfer felt like his nervous system was being shredded and then stitched back together with barbed wire.

  ?"...Dammit," Haruto gasped, back in the oppressive silence of the Interstice. He was curled in a fetal position, his body now little more than a translucent outline of flickering static. "...Am I just space-time garbage now? Is this the trash heap for people who break the rules of the gods?"

  ?"Statistically, yes," Gemini replied, its voice sounding hollowed out, as if the AI itself were becoming a ghost. "You are caught in a recursive loop of random, high-energy transfers—being dragged into incompatible dimensions by the wake of the causal explosion, only to be expelled by their natural defenses. At this rate, your self-definition data will collapse completely before we can find a stable anchor. Your consciousness will be erased, and the data packets that were 'Haruto Nago' will scatter across the multiverse as background radiation."

  ?In the darkness of the Interstice, Haruto stared vacantly into the void. He had always taken immense pride in his ability to suppress every error with cold, hard logic. As an engineer, he believed there was no bug that couldn't be patched, no system that couldn't be stabilized if you just had enough processing power. But now that he himself had become the "fatal error"—the paradox that should not exist—there was not a single move left to make. He was the bug in his own program, and the debugger was coming for him.

  ?(Elis... so this is the result of saving you...?)

  ?He tried to summon her image, to use the memory of her silver hair and her warm hand as an anchor, but even his memories were corrupting. The civilization that was supposed to be saved—the white towers, the golden sun, the rustle of the trees—was flickering like a damaged, overexposed film reel. The face of Elis, smiling happily as she reached for his hand, was now a noise-ridden still image, her features distorted by digital artifacts, her voice replaced by a low-frequency hum.

  ?He was losing the one thing that made the sacrifice worth it: the memory of why he had chosen to be deleted.

  ?"Gemini," Haruto whispered, his form now so thin that the stars of distant, unreachable galaxies were visible through his chest. "If I'm the error... then the system is finally doing its job. It's cleaning me out. And maybe... that's the only logical conclusion."

  ?He closed his eyes, waiting for the next violent tug of a world that didn't want him, his heart beating a rhythm that was becoming indistinguishable from the static of the void.