This simple wood counter serves some of the area’s better nigiri, right from the corner of a mall in Japantown. Blink and you’ll miss it—Oma is about the size of a kiosk near the Webster Street exit. Choose from five- eight- or twelve-piece prix-fixe menus to match your appetite and budget, though prices are reasonable for such quality. Clean flavors and rich, silky fish are the hallmarks of dining here. Highlights include a lightly torched wild star butterfish that melts in the mouth, and a delicious handroll combining chopped bluefin tuna balanced with pickled yellow daikon wrapped in crisp nori.