Kushi are Japanese skewers, bamboo or metal. Threaded with a sardine, a prawn, peppers, pork belly or chicken hearts, they're grilled over makeshift charcoal braziers and served up to passersby in Tokyo. In Belltown, you get to sit. In fact, you'll be served on the new open-air deck along Second, a 40-seat expanse at sidewalk level, while executive chef Billy Beach grills your mushrooms or gizzards (over imported coals) inside. This is Kushibar, from......