I went on a Wednesday night and the place was pretty empty. We were sat down right away in the dining area. We ordered a few rolls such as california, avocado, and shrimp tempura. We also got fried rice and udon noodles. Everything was very good! Our server was super attentive and very friendly as well. If I were to suggest something to improve on it would be the decor. The seats are neon green and the furniture is super dated. I think if they changed the decor to a more modern feel they would get a lot more business and popularity. They also have a hibachi table which seemed to be very popular. I've ordered Osaka to go a few times and it's definitely better when dining in. Overall, the food is really good and the staff is so welcoming! If you're in the mood for sushi, Osaka is a good option in the Summerlin area.