Don't eat here unless you have a flashlight (lighting way too dim to read the menu), small appetite (portions might as well be kid size), and want to leave feeling dissatisfied. I had the Mermaid Roll, Salmon Lemon Roll, and Sake sashimi. The Mermaid Roll was decent at best, however the roll only had 4/5 individual tiny pieces. The Salmon Lemon Roll tastes like a Harris Teeter to go California Roll with salmon and lemon on top. The salmon in general was good quality, but was served warm. Right after eating at O-Ku, I went to a cheaper sushi place just to fulfill my appetite for larger portions at a better price. The hip atmosphere with its exposed brick and high tables could not compensate for my poor experience. Very disappointed since Charlotte Agenda highly recommend it.