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Trama

Ten years ago, Kim Su Hyun was summoned to the game-like alternate universe of Hall Plain by mysterious angelic beings. After a decade of struggle, he reached the Apex of this world, but at a great personal cost. Using his privilege as the Apex, Su Hyun invokes the power of Code Zero, an absolute ability that can alter fate, to reverse time. He chooses to go back ten years to the moment he first arrived in Hall Plain, aiming to rectify the tragedies of his past.