In December 2016, Daesung's first Dome Tour was announced, with shows in the Japanese cities of Saitama and Osaka.

[2] D-Day contains seven songs written and composed by top Japanese artists, including Ayaka, Hata Motohiro and Mizuno Yoshiki.

[4] To promote the album, Daesung gave an interview to the radio station Tokyo FM[5] and appeared in several Japanese TV shows, including Sakigake,[6] AbemaTV,[7] and Music On!

[12] On March 13, a teaser of the title track's music video was posted on Big Bang's official YouTube channel.

[17] A week later, the physical edition debuted at number one on Oricon's Daily Album Chart with 29,038 copies sold.