2.5: The Final Chapter, kicking off in Seoul, then visiting other ten countries including Hong Kong, United States, Thailand, France, Germany, Russia, Taiwan, Argentina, Chile, and Mexico.

On April 28, the group's official Twitter account revealed a poster for their first world tour, announcing that the first show would be held in Seoul.

According to their agency, a small wound and swelling was discovered on Hyungwon's knee, and following an examination, was diagnosed with the early stages of cellulitis.

[3] The group was supposed to visit Indonesia for the tour, but their promoter SH Entertainment cancelled their performance due to "local circumstances".

According to Starship Entertainment, the tour was attended by total of 20,000 fans in New York, Atlanta, Dallas, San Francisco, and Los Angeles.