The last equation Kael Dravion ever wrote on Earth was unsolvable.
Not unsolvable in the conventional sense — unsolvable because no other mind on the planet could follow the trail of logic he had blazed across forty-seven pages of cramped notation. He sat in his university office at 2:47 AM, thirty-one years old, the youngest professor of theoretical mathematics in the history of the Seoul Institute of Science and Technology, with three Nobel nominations behind him and a fourth certainty on the horizon.
He wrote the final symbol. Set down his pen.
And felt the aneurysm detonate behind his left eye like a silent, catastrophic star.
There was no pain. That surprised him, in the half-second of consciousness that remained. He had always assumed death would hurt. Instead there was simply a sudden, profound silence — as if the universe had reached over and switched off the frequency his brain had always been tuned to.
His last thought, perfectly logical, perfectly Kael: *What a waste of a proof.*
Then nothing.
Then — not nothing.
Sensation returned like a system rebooting. Warmth. The smell of earth and something floral. Weight, distributed differently than he remembered — his body felt wrong, smaller, younger, the bones lighter.
Kael Dravion opened his eyes.
A sky unlike anything on Earth hung above him. Three moons — one silver, one the deep amber of old bronze, one a startling violet — arranged themselves in a triangle formation that any astronomer would have wept over. The stars behind them were too dense, the Milky Way compressed into something almost solid, a river of light so thick it cast faint shadows.
He sat up.
He was in a field. The grass was blue-green, the blades wide as his palm, and the air tasted of ozone and something sweet he had no reference for. In the distance, mountains rose like broken teeth against the luminous sky, their peaks trailing what appeared to be luminescent fog.
"Interesting," said Kael Dravion.
A child's voice. His voice.
He looked at his hands. Small. Unmarked. Perhaps ten years old.
He stood, assessed his physical condition with the dispassion of a scientist cataloguing data, then turned his attention to the most pressing mathematical problem he had ever faced: *Where exactly am I, and what are the foundational laws that govern this place?*
At the edge of the field, a boy his apparent age was lying unconscious in the grass. Same face. His face. And from the boy's chest, fading like cooling embers, the last traces of a soul departing — leaving a vacancy that Kael had, apparently, filled.
"Transmigration," he said quietly. "Genuinely fascinating."
He reached into the boy's — his — jacket pocket and found a small leather booklet. A student registration card. The name written in characters he somehow, miraculously, could read:
*Kael Dravion. Age 10. Academy Rank: F. Mana Affinity: None Detected. Status: Scholarship Revocation Pending.*
Kael read the card three times. Then he smiled — the slow, precise smile of a man who has just spotted an error in a proof that everyone else had accepted as truth.
"None detected," he repeated softly. "They measured the wrong variable."
He could feel it already. Not mana, whatever that was in this world's terminology. Something deeper. Something the instruments of this world had no scale for yet.
He pocketed the card, dusted off his new knees, and began walking toward the distant lights of what he assumed was a city.
He had equations to write. A world to understand.
And, it seemed, absolutely nothing to lose.
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