The thief startled a bit, mildly surprised at the sudden command.

“…Ok, ojou-san. I won’t come any closer. But may I at least ask what you’re doing up here?”
He stood, putting his hands in his pockets and leaning away, tilting his head and smiling at the other.
“It’s not often I find someone so young waiting on the rooftop at one of my heists. Well, aside from tantei-kun.”