"Love Letter" is a single released by Gackt on March 1, 2006 under Nippon Crown. It peaked at ninth place on the Oricon weekly chart and charted for seven weeks. The A-side and B-side were used in the Mobile Suit Zeta Gundam movie , as opening and ending themes, respectively. "Dybbuk" also previously appeared on Gackt's 2003 album Crescent. It was certified gold by RIAJ.