Old curry restaurant 'Crown Ace(クラウンエース)', Ueno, Tokyo.
You can eat delicious Japanese style curry rice cheaper here.
-Chicken curry rice : ¥400
-Pork curry rice : ¥400
-Beef curry rice : ¥450
-Pork cutlet(Tonkatsu) on standard curry rice : ¥500
It might not super delicious because that is not expensive restaurant.
Kobe beef is amazing. But also I'd like you try to eat cheaper Japanese foods.
Those curry rices are like a beef bowl in Japan, a fish & chips in U.K or a hot dog at sport stadium in U.S.
Although this shop might not best of all curry restaurant in Japan, They'll definitely serve for you true taste of Japan.