"A world of problems, then," Robin said, wincing.

She tried to think of where to start. The crystals seemed significant, though it might be hard to put her finger on why. But if they connected them back to their worlds, somehow, then they needed to be protected -- and a war over them posed a problem. She frowned, looking distance, before she nodded.

"The enemy in this war wants something with the crystals?" she ventured, looking sideways at Zelda. "If they have great power..."