Valorus_Prime
Zuko was never supposed to exist.
Nine years ago, a plane vanished over a war zone and a little boy named Midoriya Izuku was declared dead. What the world never saw was the wreckage on the wrong side of the border, the quirkless child pulled from the fire and logged as inventory by a mercenary outfit known only as the Numbers. Raised as a ghost with a gun, he learns to survive by being useful, silent, and forgettable-until the handler who owns his leash decides he's easier framed than trusted.
Now operating under the callsign Zuko, he's on the run from the very people who trained him, caught between terrorists, dirty contracts, and a Japanese unit that should have been his home all along. Dragged into JSDF custody after a firefight he never meant to start, Zuko finds himself listed not as an enemy combatant, but as a recovered unknown-and DNA tests whisper a name he doesn't remember: Midoriya Izuku.
He's lost his past, his future is a battlefield, and every side wants to claim him. Ghost, weapon, witness... or someone's son.