Rock had no such fears of running out of power. His systems could be recharged directly, but he had solar cells that meant he could last without full recharges. Zero and Harpuia, however, didn't have that luxury. They didn't have the resources to adapt the two to use Rock's solar technology. As time went on, Rock himself started to worry about them too. He wanted to do something to help, but what could he do?

It was this problem he was wrestling with when he heard a noise coming from a nearby dorm. He set aside his broom and looked into the room.

"Zero? What is it?" he asked.