TVXQ's Changmin revealed that he prepared for 2 months for his shirtless performance!

The duo had their 'TVXQ! Special Live TOUR -T1ST0RY-' at the Olympic Gymnastics Arena in Seoul on December 7 and held a PRESS CONFERENCE before the CONCERT. Changmin talked about taking his shirt off for the CONCERT, saying, "I prepared hard for 2 months to take my shirt off. For 2 months, I didn't eat any soup or jjigae (Korean stew), and didn't even eat pepper powder or kimchi. I beared through a hard TRAINING."

The special live TOUR is the duo's first concert in Korea in about two years. After their Seoul concert, they'll be heading to Taipei, Taiwan on December 13 and Beijing, China on December 19.