It really depends. A lot of Japanese these days are more toast-and-yogurt than the traditional Japanese breakfast (which itself varies regionally). For that, though: some kind of soup (probably, but not necessarily, miso), grilled fish, various pickled veg, possibly a small salad, etc.
Wouldn’t Japanese breakfast ramen just be miso soup and natto flavored?
It really depends. A lot of Japanese these days are more toast-and-yogurt than the traditional Japanese breakfast (which itself varies regionally). For that, though: some kind of soup (probably, but not necessarily, miso), grilled fish, various pickled veg, possibly a small salad, etc.