It wasn't often Prometheus went out. He was fairly sure he had a small version of agoraphobia, not to mention his inherit fear of looking up and finding an eagle circling around him. The last wasn't a very logical fear, but he'd long ago learned fear didn't need to be logical.
But he'd had to drop off some art, and realized he was hungry. Left alone, he hardly ate but the cafe looked nice enough. But when he came inside he froze. He recognized the woman nearby well enough and a faint panic overcame him. Her and her brother had brought the chains and put him in it and decades later he feared she'd do it again.