Popular girl group f(x) will be holding their first showcase in Japan.

f(x) will be holding their first showcase, 'f(x) Premium Showcase~1st Shock' at the Zepp Tokyo in Japan on October 18. 

Their official Japan website also mentioned that f(x)'s hit song, "Hot Summer" has also been released as a ringtone in Japan. A video about this release has also been seen on the Avex Japan Youtube channel.

f(x) is currently back with their new song, "Electric Shock," which was released on June 10. They have ranked number 1 three times, making them the 'triple crown'.