When you simply need to eat at 4 or 5 in the morning, and you're in the Yonge and Finch area, this is the spot.
I've been here twice, once at 3:30 and once at 4:30 and had great service from the same guy (don't know his name). On top of the great service, the food ordered was also amazing. We even got complimentary soup during our last visit. You can order anything you'd expect at a typical Korean restaurant.
Seriously though, late night hunger pains - go here!
Side note: after hours, Blake is your man!