What if an American cooks Japanese dishes?

I don't like cooking very much and I usually don't cook. But lately, I have tried to make Japanese dishes with my boyfriend. I think he is good at cooking but he had never tried to cook Japanese food. So it's fun trying to make Japanese dishes together. We look up Japanese dishes we want to eat and find the recipes. We made Katsu-kare which is Japanese curry with breaded deep-fried pork,Gyoza which is Japanese dumpling, and Korokke which is breaded deep-fried mashed potato(?). We also made a variety of rice balls called Onigiri for our picnic. Please take a look at the pictures. They look delicious, don't they? He also liked those dishes. It's always a great success!...except our kitchen is messy after cooking.
I'm wondering what we should try next. What Japanese dishes do American people like? Also I have to consider if we can get all ingredients here easily. Please let me know your favorite Japanese dishes.:)

Katsu-kare

Gyoza

Onigiri