Signed in Ash

Echo did not hear the footsteps at first. The wind had returned, restless now, threading itself through the broken dome and rattling the loose metal panels like bones. The lantern flame bent sideways, shrinking low, and Echo was still staring at the letter when the crunch of snow finally registered—too heavy, too deliberate to be the mountain settling. “Echo.” The voice was real. Solid. Warm. Echo turned so fast the paper nearly tore in their hands. Aren stood at the threshold of the observatory, shoulders dusted with snow, breath steaming in the cold. He looked older than Echo remembered—not by years, but by weight. His eyes moved quickly, assessing the room, the shadows, the open cylinder half-buried in ash outside. Behind him, Kael emerged more slowly, pulling his hood down with a familiar impatience. His eyes were already alight—not with fear, but fascination. They always had been. “You’re alive,” Aren said, relief breaking through his guarded tone as he crossed the chamber in long strides. He gripped Echo’s shoulders, firm, grounding. “You disappear for three days and come back to this place?” Echo swallowed. The words I sent myself a message from the future lodged uselessly in their throat. “I needed to remember,” Echo said instead. Kael had already moved past them. He crouched near the balcony doors, staring out at the scorched snowbank where the cylinder lay steaming faintly, its surface etched with symbols that caught the starlight. “That wasn’t here before,” Kael murmured. “Was it.” “No,” Echo said. Aren followed Kael’s gaze, and his jaw tightened immediately. “We leave,” he said. “Now.” Kael shot him a look. “You haven’t even asked what it is.” “I don’t need to,” Aren replied. “Nothing falls from the sky on purpose.” Echo folded the letter carefully, hands shaking just enough that Aren noticed. “What happened?” Aren asked, softer now. Echo hesitated—then slipped the paper into their coat. “Something that knows my name.” That stopped Kael cold. He stood slowly, eyes narrowing, curiosity sharpening into something dangerous. “Show me.” “No,” Aren said at once. “Absolutely not.” The brothers faced each other then, the old divide snapping back into place as easily as breathing. Aren—built for survival, for endings. Kael—wired for beginnings, for questions that burned holes through common sense. Kael scoffed. “You don’t get to decide that.” “I do when it gets us killed.” Echo stepped between them before the argument could spiral. “It’s just a letter.” Kael’s eyebrow rose. “Just?” “It’s a warning,” Echo said. “I think.” Aren exhaled sharply. “Warnings don’t arrive in metal coffins.” Outside, the cylinder gave a low creak, contracting as it cooled. The sound echoed through the observatory, deep and hollow, like a heartbeat waking up. Kael smiled faintly. “You hear that? It’s still active.” “No,” Aren snapped. “It’s a threat in.” Kael turned to Echo, eyes bright. “You worked here. You built half the systems they abandoned after the war. If something chose this mountain, chose you—don’t you want to know why?” Echo did. The truth sat heavy and undeniable in their chest. Aren saw it and cursed under his breath. “Whatever this is,” he said, voice low, “we destroy it at first light.” Kael’s gaze flicked to the coat pocket where the letter was hidden. “And if it already destroyed us once?” Silence followed—thick, uneasy. Somewhere deep beneath the observatory, old machinery shifted. Not enough to be certain. Just enough to feel wrong. Echo felt it then—a pressure behind the eyes, a pull in the bones. The mountain wasn’t sleeping anymore. And neither, they realized, was the future.