Japan, playing without Los Angeles Lakers forward Rui Hachimura, was stunned in the first of its two Olympic warm-up games against South Korea 85-84 on Friday. Japan went 11-for-35 from three-point range, giving the visitors many more rebound opportunities that they exploited to turn a second-quarter deficit into a 20-point lead they held at the end of the third at Tokyo’s Ariake Arena. The Akatsuki Five finally hit their stride in the fourth quarter, taking an 84-82 lead with 37 seconds remaining before Lee Jung Hyun tied it with a field goal. A Japan foul under its basket gave South Korea a …