They are doing an excellent job overall. The service is fast and friendly. Their curry recipe is very good, It has a darker, tangy, savory, gravy-like flavor- and it is less sweet than most Japanese curry that I have had. I've dined at many Japanese curry restaurants, and Oh Curry ranks among the best. Definitely a must-try if you are looking for something different, or just a simple, affordable, good-tasting meal.
Other thoughts: their menu is simple and straightforward by design. I suggested to the host that they might want to consider adding tofu as an option for vegetarian diners, and I got the sense they might possibly be open to it if there seemed to be demand for it from their customers.