When making sukiyaki seems a little too much, I cook and serve it in a pan.
I had about 200 g of sukiyaki beef, but it was too little to go through the effort of making sukiyaki, so I made a variation of it in a frying pan. It's an easy way to prepare a sukiyaki-like meal.
Adding the beef in two processes helps to keep it from getting too tough. You can use leek stalks in place of onions. Green onions can be substituted for mizuna greens.
Enjoy Japanese food around the world.