And practice continued.… By the summer of 2028, the city of Minase had become known for something unusual. It was not a large city. It did not host national championships. It had no Olympic training center, no famous university, and no wealthy sponsors. Yet every few years, another swimmer from the tiny Minase Dolphins Swimming Club appeared in the rankings of Japan’s under-15 competitions. Sports journalists occasionally wrote short articles about the phenomenon. “How does such a small club keep producing champions?” The answer seemed simple. Hard work. But the people who had spent decades inside the club knew that the real story was much more complicated. The club’s owner, seventy-two-year-old Kenji Sakamoto, often said that swimming was not really about swimming. “It only looks that way from outside.” Over the years, three district champions had become legendary among the club’s coaches. Not because of their record...