You Can't Spell Tokyo Without K.O.

Every day, all across the city of Tokyo, a curious phenomenon unfolds: scores of blue- and white-collar citizens end up passed out — sometimes in spectacular fashion and mind-boggling positions — on the streets, on trains, in restaurants, in bushes, or anywhere else imaginable. Come nightfall, one might stumble upon a well-to-do Japanese salaryman lying crumpled and snoozing facedown on the sidewalk, apparently walloped by a haymaker of fatigue that sent him crashing down for the count. The...