Have you had japanese curry?
Its a little different from other curries like indian curry or thai curry etc. There is no coconut milk or milky substance in it generally. Its not very spicy and favoured amongst children [and adults] in Japan.
However too many people make japanese curry using the instant roux cubes which are widely available on the market. If you have ever looked at the ingredients list on these instant roux cubes..you would probably not want to eat it too often. Dont get me wrong, i eat a lot of processed food XD So this is not the reason why i make my japanese curry from scratch.
Its because it just tastes SO MUCH BETTER.