I had worked by St. Andrew station for 10 years+ and never noticed this gem. It actually has a coffee cup neon light as seen from the outside and you might most likely miss it.
They have fulfilling options for around $6 which are great tasting such as the combo A,B,C which are mix of rice, meat, slaw, veggies. And they also serve sushi sets from all sorts along with things like seaweed salads. A very good find!