The restaurant is called "New York New York," and there is one located in downtown Gumi not far from the train station. They serve steak, salad, and pasta. Every time I've finished a meal there, they've offered me coffee or ice cream to finish it all off.
Below is a Boston Butt smothered with a spicy blueberry sauce. I have found the Boston Butt and rice pilaf meal to be heartier and it cost about 3000 wons less. Still, it was a delicious meal.