Japan is not a city.
Kay, so it really depends on which island you go to. There s Oahu, which is really the major island. Most of the actual shops are there. And the Big Island has different areas for different things. If you want sun and vacation-like areas, Kona is the city for you. Hilo is the area where it s seldom as sunny as Kona, but there s more of a store selection and housing is cheaper. Waimea is a bit windy, but very scenic.