Being an enforcer means that Nikolai often keeps odd hours, jumping up whenever the don requests it to jump into whatever shitstorm he was needed to clean up. A glorified killer and cleaner, not that he minded one bit.
Despite this, he's still human, which means those odd hours often lead to exhaustion. Thus he's become very familiar with the coffee shop down the street from the don's penthouse apartment; a little hole in the wall cafe open 24/7 despite being fairly dead most of the time. The perfect place for a guy like him to get in and get out.
Didn't help the barista that seemed to work just as odd hours as he did was pretty cute. Not that he'd ever admit that to a soul. He can't afford to have any kind of weakness or soft spots, not even for someone like you.