Although TVXQ has returned as a duo, they're proving that they've still got the skills and charisma that originally made them so popular in Japan. �Now seasoned industry veterans, they're leading the wave of Korean idol groups that are debuting in Japan this year, and the two sure have made a solid start! � They've just topped Billboard Japan's Hot 100 chart, a huge accomplishment by any standards! �In addition, it's been also recently revealed that TVXQ has had the highest sales for any artist in Japan thus far in 2011. Congratulations to the duo. Source: Billboard Japan Tip: Teresa