ex-Syndrome members Vo.ASAGI, Gu.Ruiza, and Gu.SIN first form D. Dr.HIROKI is recruited to fill up the lineup.
Gu.SIN departs from the band; Gu.Ruiza is hospitalized around this time. D is forced to pause activities; in the meantime, ASAGI and HIROKI continue to play in their session band, Night of the Children, where they also perform alongside Support Gu.HIDE-ZOU.
D resumes activities as Gu.HIDE-ZOU joins the band.
D holds their first oneman live, Believe or not Believe, at Meguro Rokumeikan.
D announces their end of the year countdown event, Mad Tea Party Countdown 2016-2017 at Sanrio Puroland.
D abruptly cancels their countdown event due to financial issues with their event organizer, Pleasure Entertainment.
Oneman tour Deadly sin begins
Live held at Yokohama NEW SIDE BEACH
15th Anniversary and 10th Major anniversary one-man live held at Toyosu PIT