Great service, great food and great prices. Whether it's Japanese or Korean you're seeking, you won't leave disappointed. There is a good variety of panchan offered to any main entree and they will readily fill you up before the rest of the food hits the table!
Start with the japchae, translucent Korean-style noodles with vegetables; the sun dubu jegae is well worth it and is easily made vegetarian if you request it. The tea, roasted with rice, is a good compliment to the food as well. Dessert often consists of fresh orange slices.
As in South Korea, there is a little 'doorbell' attached to each table used to fetch the waiter or waitress. I've never see this restaurant crowded. I doubt it could handle the volume, since there are currently only one or two waiters/waitresses working on a given day. Han Kang remains a hidden gem in Scarborough.