Choo Sung-hoon announced that he attended the first concert of the BTS world tour. On the 9th, he shared photos on SNS showing his attendance at the BTS world tour held at Goyang Sports Complex. Choo Sung-hoon expressed his thoughts on the concert, saying, "On the first day of the BTS world tour, I was invited by Jungkook and attended a concert for the first time." He continued, "Despite the heavy rain, the performance created by the artist and ARMY (BTS official fandom name) standing in the rain together was the hottest and most moving moment of all." He also added, "The BTS who showed the best performance was truly touching," and "I sincerely thank you."

The photos released by Choo Sung-hoon showed him posing warmly with RM, Jungkook, J-Hope, V, and Jimin. BTS opened their world tour at Goyang Sports Complex that day and will continue performances at the same venue on the 11th and 12th. Afterwards, they plan to hold a total of 85 concerts in 34 cities including Tokyo, North America, Europe, South America, and Asia.