DON'T SAY GOOD-BYE is the first in the five-single series of indies collaboration singles by Melon Kinenbi, after their graduation from Hello! Project. This single was a collaboration with BEAT CRUSADERS, and released as limited distribution on June 24, 2009. People that purchased the single from the Tower Records online store received a free original computer wallpaper. The single peaked at #68 on the Oricon weekly charts, and charted for one week, selling 1,385 copies.