Mix the all-purpose flour in a large bowl with 300ml of water and mix thoroughly.
Turn on the teppanyaki grill and set to medium heat. Spread the oil evenly across the iron griddle with a brush. Also, spread the batter using a ladle and then drizzle a teaspoon full of katsuobushi on it as well.
Pour in the batter and add the shredded cabbage on top (don't use all the cabbage at once), then start adding the 4 bacon slices on top of the cabbage as well. Cook it for roughly 5 minutes.
Once the one side is cooked (with a brownish color), flip it over with the hera to allow for the other side where the bacon is to cook (do it for 4 – 5 minutes).
While the okonomiyaki is being cooked on a certain spot in the teppanyaki grill, try cooking the yakisoba on another space and add the okonomiyaki sauce and mirin.
Find another empty space and cook 5 or 6 pieces of shrimp there. Then mix it together with the fried yakisoba as well.
This time, flip the okonomiyaki pancake once more onto the yakisoba, covering them.
Fry a scrambled egg on another unused space on the teppanyaki grill and then flip the pancake again on top of it once it’s cooked (the egg should be cooked in just about 1 – 2 minutes).
Flip the pancake one last time and sprinkle it with okonomiyaki sauce.
Now transfer it onto a large plate and drizzle it with aonori and green onions.
Serve immediately.