I'm not a huge sushi fan but I'd definitely come back here. All the food was extremely fresh and tasty. The prices were a little steep but what good sushi place doesn't charge a little more? We had the Oh My God roll, Roppongi roll, 911 roll, Lychee Sake, Miso Soup, and Unagi. All were great except the unagi in my opinion but I'm not a fan. Everyone else most definitely enjoyed it.
The service was good. Nothing out of this world but our server came back and checked on us a few times throughout the meal and did her job.
Overall, I'd really give Osaka a 3.5 because of the prices and mediocre service.