Yuji Watanabe, chef-owner of the Cape's best Japanese restaurant, makes early-morning journeys to Boston's fish markets to shop for the freshest local catch. His selection of sushi and sashimi is vast and artful, and vegetable and seafood tempura come out of the kitchen fluffy and light. If you're a teriyaki lover, you can't do any better than the chicken's beautiful blend of sweet and sour. Can't decide what to order? He's happy to design a varied and generous tasting menu. One remarkable element of the restaurant is its artful lighting: small pinpoint lights on the food accentuate the presentation in a dramatic way. The serene and simple Japanese garden out back has a traditional koi pond.