In the dense residential corridors of Tokyo's Shinjuku ward, the long-running tension between economic ambition and the quiet dignity of daily life has reached a formal turning point. After more than 1,300 complaints from residents enduring noise, trespass, and disorder, ward officials have moved to restrict nearly half of the area's 3,775 private lodgings — the highest concentration in Japan. The decision reflects a widening recognition, echoed from Kyoto to Mount Fuji, that the promise of mass tourism carries costs that spreadsheets rarely capture: the erosion of neighborhood, belonging, and