"By the void," Danil snarled.
Blue turned to look where he and Keegan were both staring.
Neona knelt on a softly undulating, murky black surface, surrounded by a swirling cloud of that same odd blue-but-not-blue. She smiled, looking perfectly at ease. As Keegan continued to shout, struggling to move forward, reaching for her, Neona tipped her head back, looking up at the sky, and laughed. The not-blue cloud thickened. A thin stream of sparks tinged blackish green, the color that Blue had always imagined pain would be, shot out from the center of that cloud.
Keegan choked and went to his knees. The sparks became a semi-transparent cable. As it rippled, struggling like a live thing, it grew more opaque, filling with sparks of that blackish green, and stretched out... to attach to Keegan.
"Danil, do you see--"
"It's their bond." Danil shifted his grip on Keegan and pushed him forward, toward the cloud enfolding Neona. She continued to laugh, her mouth open and shoulders shaking, though now they couldn't hear her.
Blue saw the cord between the twins growing thinner, even as the blackish green sparks thickened, turning almost completely black. She joined in pushing Keegan toward his sister. Maybe if he touched the cloud surrounding Neona, he could break through to her.
"Neona!" Keegan convulsed as the cord vanished in an explosion of black sparks that shot through Blue's chest like a fishing spear.
She grabbed hold of him, even as he twisted and fell, and for a moment they were almost nose-to-nose. Keegan's eyes widened and she knew he saw her. Blue sparks wrapped around them, then he convulsed again and vanished from her grip.