Absolutely the best place for Japanese curry in the city. This place serves the lesser know Japanese food, very authentic and has a friendly staff. Family owned and run. Expect a wait on weekends.
Order the homemadehamburger with mushroom sauce. If you order the curry sauce, be careful of the spicyness. 2X = double spicy, not medium. It's REALLY hot.
The mentaiko spaghetti is good but not great, kinda like the service. They're a sweet old couple running at a slower pace then most places. At least you can enjoy some anime or manga while you wait.