In late December 2021, Nagabuchi's official team released a teaser for the , continuing the momentum of his comeback into the following year.
: The tour concluded with a high-profile show at LINE CUBE SHIBUYA (Shibuya Public Hall) on December 29, 2021. This final performance was also live-streamed for fans who could not attend in person. Media Releases and Legacy tsuyoshinagabuchirar 2021
In 2019, Nagabuchi announced his retirement from music, citing health concerns and a desire to focus on his personal life. However, after a two-year hiatus, Nagabuchi revealed that he would be coming out of retirement and returning to the music scene. Fans were thrilled to hear that Nagabuchi would be releasing new music and embarking on a concert tour in 2021. In late December 2021, Nagabuchi's official team released