A world champion’s smile

South Korean badminton star An Se-young arrived at Incheon Airport early Tuesday, two days after winning the world title in women's singles in New Delhi. An, the world No. 1, defeated second-ranked Akane Yamaguchi of Japan 21-17, 21-14 in the final to cap a flawless six-match run in which she did not lose a single game. The win marks her second world title, following her victory at the 2023…