K-pop idol duo TVXQ will embark on a Japanese concert tour to mark the 10-year anniversary of their debut, the group announced Saturday.

The duo will tour five Japanese cities -- Tokyo, Sapporo, Nagoya, Osaka and Fukuoka -- for 12 performances, with the first to be held on Feb. 7 next year in Yahoo Oku Dome, Fukuoka.

The duo unveiled its plan for the concert tour at the Japanese summer music festival “a-nation stadium fes. 2014 powered by in Jelly,” held Saturday in Tokyo.

The two were given the honor of performing last at the hours-long annual show for the fourth consecutive year, proving their long-lasting popularity in Japan.??

TVXQ drew 550,000 fans to their Japanese concerts in 2012, 850,000 in 2013 and 600,000 in 2014, becoming the first Korean artists to garner a whopping 2 million fans over the last three years.

TVXQ released the live DVD “Tree,” highlighting its three-month concert tour around Japan, on Aug. 27. They plan to drop a new Japanese EP, “Time Works Wonders,” on Nov. 5.

By Ock Hyun-ju (laeticia.ock@heraldcorp.com)