Shimada Shoten in Tokyo’s Edogawa Ward is the only company in Japan that sells the special hair oil used by sumo wrestlers. With its characteristic aroma, the oil is a dead giveaway that a sumo ...

When a coterie of sumo wrestlers disembarked on a platform at Nagoya Station just after 3 p.m. on June 25, the distinctive smell of the hair oil that they use wafted through the air. Some ...