KAT-TUN is busy with activities to celebrate their 15th Anniversary. Aside from an online concert for the 15th Anniversary tour, an official Twitter account was also created for the release of "Roar", their first single in 3 years. The official tracklist was also released on the special website for the single, which includes "To the Next", as well as unreleased songs from their junior days "Seiten no Hekireki", "Tsuki no Michi" and "Le Ciel".
The versions containing the members' solos will come with a code you can enter on the special website to stream the official PV for each solo song from March 9, 2021 to June 30, 2021.
You can watch a preview of Roar's official music video above on J-storm's Youtube channel.