apanese curry is a lot different from Indian curry, the dam curry has its own story. While the first specific instance can be traced back to 1965, dam curry became a thing around 2007, and that was when it gained it’s name. This curry dish is made in restaurants meant for tourists visiting various Japanese dams, and the shape varies from place to place. In some places, it’s only ever made on special occasions, to commemorate dam anniversaries and so on.
But I’m sure that with some ingenuity, rice building skill and curry, you can make some back home.