Hallyu king Kim Jun-su of JYJ has jumped on the “Descendants of the Sun” craze bandwagon with the release of his newest single, “How Can I Love You,” as part of the drama series’ latest Part 10 sound track. The romantic ballad single, which appeared in the penultimate episode of the smash-hit KBS TV drama Wednesday night, was released Thursday and quickly snagged the No. 1 spot on all of the country’s major music sites, including Melon, Naver and Mnet. Kim Jun-su of JYJ (C-JeS Entertainment) T