The other is "regular" Italian pizza. Or is that American pizza? I don't know. Anyway, so far, Japanese pizza is the best I've had. They start with a pretty standard American style pizza and then add all kinds of stuff not common in America but very delicious. For example here is what's on some of the pizza's in this ad.
The first pizza on this add called "Mix−J" has onions, green peppers, salami, bacon, corn and pizza sauce.
#2 is called "German Taste" and has bacon, potato, onion mayonnaise, pizza sauce,
#3 is called "Curry German" and has potato, bacon, tuna, onions, corn and curry sauce.
#4 is called "Meat Gratin" with onions, macaroni, corn, mushrooms, meat sauce, parsley and white sauce.
#5 is "Basil Deluxe" and is made from Basil sauce, tuna, bacon, crushed tomatoes, Italian sausage
#8 is called I think "Downtown Special" and it has cherry shrimp, squid, dried benito, octopus, cabbage, yakisoba and okonomiyaki sauce.
#15 is called "Hot Dog Pizza" and has cabbage, wieners, scrambled eggs and tomato ketchup.
#17 called "Teriyaki Chicken" and has guess what ... teriyaki chicken, mayonnaise, cabbage, nori and of course teriyaki sauce.
You'll have to trust me. This stuff is awesome. Actually many of them would be easy to make here. #2, #4, #5, #15. The tuna (the kind from a can like you'd make a tuna salad sandwich with) and the mayo both really make a big difference.
It shouldn't seem all that strange either. Anybody who's been to a California Pizza Kitchen should know that pizza doesn't have to just be cheese and pepperoni.