The clock on the wall read 2:00 AM. In the master suite, Lucian and Elara were finally asleep, their hands still linked in a silent pact of protection.
But in the bedroom down the hall, Leo Vance was wide awake.
He sat cross-legged on his bed, the black obsidian cube glowing with an eerie, sapphire light. Leo had spent three hours analyzing the surface. He’d discovered that the "logic lock" wasn't about math—it was about vibration. By humming specific frequencies, the internal magnets shifted.
Click.
The cube didn't open like a box. Instead, its surface retracted into itself, revealing a complex, glowing interface of liquid mercury and light.
"Whoa," Leo whispered.
Suddenly, his room’s smart-light turned on. Then it turned red.
Across the room, his robotic arm—the one he’d built for
