I have no idea where Sushi Seoul comes from. This place doesn't serve sushi. Its name is actually Shin Chon. It's a Korean restaurant inside a small plaza just north of Yonge/Steeles. The signs outside mentions "Chinese" but I don't even see any Chinese food or Chinese Korean food anywhere on the menu. It's just a standard Korean place with one special thing going for it: $10 AYCE pork belly. Of course, they have a ton of standard Korean dishes too if you don't want pork belly.
I'm very fortunate to have Korean friends. The $10 AYCE pork belly special is not listed anywhere on the menu. My friend found this place on a Korean website and discovered the special that way. This is probably the cheapest AYCE dinner, ever. Yes it's all you can eat and it comes with side dishes and 2 refills.
There isn't much to write about in terms of quality for the pork belly. They give you some raw pork and you grill it yourself using a standard gas tabletop stove. The side dishes were ok. Nothing stood out. It comes with a tofu stew. I felt they added too much black pepper to it.
I'm not sure when the $10 AYCE pork belly special will expire so if you arrive and they don't have it, don't hate me. :)
I guess all these identity issues don't affect their business very much because most of their customers are Korean. They have English on the menu so language shouldn't be a problem. Recommended, especially for the AYCE pork belly. The next cheapest AYCE pork belly place charges $15. I can't think of a better deal in the area.