I can't think of any food that don't exist from shows that I wish was real.
And I also made onigiri before. I cooked up some chicken with vegetables that I diced fairly small in a sauced made of soy sauce, oyster sauce, siracha, and sesame oil. It was seasoned with ground ginger, garlic powder, onion powder, freshly ground black pepper, kosher salt, and cayenne powder. They came out really good, especially the next day.