Intriguing! You really set up the story nicely in this; I especially like the line I leaned on the parapet and looked down at the city, scattered squares of light reaching to the darkness of the rivers.
This was really good. I thoroughly enjoyed your descriptions, especially the line that someday_93 already pointed out. I’m very intrigued to know what’s going on here. Sounds like this guy is about to get in way over his head.