TVXQ still knows how to keep their fans interested in their music, even after going from a 5-member group to a duo.

Idol group TVXQ recently held a successful Tokyo Dome concert for their fans in Japan.

Oricon revealed on May 26 that TVXQ held a 4-day tour from May 21-24 at the Tokyo Dome for their "TVXQ Live Tour 2014 TREE," meeting with 220,000 fans.

"When a song like CHAMPION plays, you get goosebumps when you appear in front of a crowd of 50,000 people waving their red penlights," stated Changmin about their experience during their live tour, according to Allkpop.

During their concert, the duo unveiled their new song "Sweat," which is set to be released next month, surprising their Japanese fans, according to the Korea Herald.

TVXQ began their tour in Japan on April 22 in Yokohama, visiting 10 cities in Japan including Tokyo, Osaka and Nagoya for 29 performances.

The album cover photo for their upcoming Japanese two-track album "Sweat/Answer" was released in early May, showcasing the two idol members dressed in various casual and stylish outfits, according to 24-7Kpop.

The album will consists of their two songs "Sweat" and "Answer."

"Sweat" is reportedly a jazz dance track that will be perfect for the summer time while "Answer" will showcase the members' soulful vocal skills.

"Sweat/Answer" will be released on June 11 and will come in three versions.

While TVXQ continues to impress with their music, Yunho has decided to further launch his acting career.

U-Know Yunho was recently cast in the new drama "The Night Watchman's Journal," according to Yahoo Entertainment Singapore.

He will be returning to the acting scene in a year and three months, following his role in the SBS drama "Yawang."

Yunho will be acting as a "cold-hearted and serious man, who is popular around the ladies." The idol member will be working alongside actor Jung Il Woo.

"The Night Watchman's Journal" is a period drama about a night watchman who catches ghosts in the night. It is set to premiere in July, following "Triangle."