New York City? San Francisco (where Levi Strauss invented them)? ... The answer is Kuakashi, Japan. This City's Kojima district was once a hub for manufacturing school uniforms, judo-wear and canvas sails. Today, a small group of Japanese denim brands use the old hand-operated looms -- that produce less than a yard of fabric a day -- to manufacture hand-stitched jeans that fade and crease differently over time for each wearer. Then the jeans are sold in select Japanese shops, New York