Well, it's pretty literally meat and potatoes (in a stew-like broth), although apparently the Japanese typically go relatively light on the meat. Still, if you're in a Japanese restaurant and are scared of some of the more exotic ingredients in some meals, it's a really safe pick.
MmLet's have nikujaga tonight.
A stew of beef, potatoes, and onions.Ah, Akari-san. Tonight we're...Curry today?Eh?
Umm...I guess so. Can you go get the curry powder?Leave it to me!