Research: Korea overtake Japan in the Pop Culture War

Once, Japanese movies, videogames, and pop music were all the rage. But now, the epicenter of Asian pop culture has moved 700 miles (1000km) westward, from Japan to Korea. And no, it didn’t start with Gangnam Style. Check out this Google Trends chart, which shows the number of Google user searches for the term “K-pop” versus searches for “J-pop”, from 2004 to the present. K-pop searches began to skyrocket fully two years before Gangnam Style’s July 2012 debut: 

source : http://qz.com/21468/why-it-was-so-easy-for-korea-to-take-over-japan-in-the-pop-culture-wars/