Beep—.

Tsukasa has finished charging. He gets off the bed and looks for Rui. Pegasus-517—that was Tsukasa's other name. Since Rui is nowhere to be seen, he heads to the lab and finds him, as expected, working on a machine. Not wanting to disturb him, he watches quietly until Rui turns around. His dark circles seem to have deepened. He must have stayed up all night again.

...Doctor, did you skip sleep again?