A very nutritious dish! You can eat a lot of rice with the curry flavoured sauce.
This is my mother's creation.My little brother used to love this and asked her to cook it often.
1 tablespoon of curry powder may be too spicy, so put 1/2 tablespoon and adjust to taste.You could replace the water for dashi stock. You could also add onions, but I didn't.
Enjoy Japanese food around the world.