The name implies that this is a Japanese restaurant as does the fact that they serve sushi and sashimi. However other than the sushi/sashimi the menu focuses on Americanized Chinese standards.
Personally I'm not a fan of typical Chinese food, so I stuck with the sushi. I had a two color roll, it was pretty standard, yet still flavorful. I also had the eel, which I really couldnt not tell you what kind as I let the waiter surprise me. I was a cube of rice topped with a piece of cooked eel that had been braised in a very tasty sauce. I actually really liked the eel and wished I would have ordered more and not had the roll.
Osaka is tucked into a weird interior corridor of a strip mall, so it can be hard to find if you aren't looking.