"Okay," Akihiko said cheerfully. He also nodded and smiled at the janitor as they passed him, then reached the staircase and started up with no hesitation. It was sort of like training - he often ran up and down stairs if he really wanted to get a good aerobic workout that day.

He'd probably wind up leaving Ianto behind without realizing it, at this rate.

"Man, I wish I knew this was here," he said as he trotted upwards happily, just beginning to grow a bit breathless. "This is great training for your heart."