Female duo Balbbalgan4 topped the Japanese iTunes album download K-pop chart with their official debut in Japan.

Right after the release of their Japanese debut album "RED PLANET (JAPAN EDITION), which was released in Japan on June 5, has become a hot topic.

In addition, Bolbbalgan4 demonstrated their global popularity by selling the front seats of its debut showcase held at Osaka's Umeda Babana Hall on June 6, and continued their full-fledged activities in Japan by holding a showcase at TSUTAYA O-East in Tokyo on June 8.

Starting with their official debut in Japan, Bolbbalgan4 has been meeting with overseas fans, holding Asian tours in Hong Kong, Thailand and Taiwan.