"Rouge no Dengon" is a Japanese cover song featuring galaco. It is the first demo released to promote the voicebank's VOCALOID3 update, having performed the song using both the "Red" and "Blue" versions of the update. The song was written to be the opening song for the 1989 Studio Ghibli film, Kiki's Delivery Service. "Rouge no Dengon" was originally performed by the Japanese singer Yumi Matsutoya.