The excitement from Kaelen's brilliant idea, the Entropy-Reversal Singularity Core, still hummed through Elias. After their passionate kiss and his initial flurry of calculations, he spent the next few days in an almost feverish state of creation, refining the intricate blueprints for this revolutionary power source. Kaelen stayed by his side, fascinated, her quiet presence a comforting anchor in his boundless intellectual pursuit. Lumie, now completely comfortable, often fluttered around them, adding a touch of whimsy to the grand scientific endeavor.
One afternoon, as the final holographic schematics solidified before them in the Experimental Lab, Elias turned to Kaelen, his face alight with a mixture of pride and a hint of the joy he now felt more frequently. "It's ready," he announced, his voice deeper with satisfaction. "The design for the Entropy-Reversal Singularity Core is complete. And it's truly magnificent."