The premium membership club "Blue" is located on the outermost side of the noisy and bustling street. It looks like a twelve-story building that can be seen everywhere. Although there is an elevator directly to the tenth floor outside the store, because the upper floors need to be climbed up via the spiral staircase in the store... So it is almost an independent space isolated from the outside world. The overall impression of the store is based on the name "Blue", so the interior decoration is based on blue.