Transmigrated into a Novel as the Female Lead’s Ex-Husband

Luke woke up in the body of a doomed side character—the heroine’s ex-husband—exactly one year before his death. In the original story, he was a pawn used by corporations and bloodline families before being discarded. This time, after a second awakening grants him an ice power fused with Time and Space, Luke plans to survive by rewriting his fate from the shadows. But the story is already changing, ancient powers are waking, and the world itself is heading toward destruction. — Description from novelcodex.org