opening theme (OP) from Kamen Rider Decade. It was performed by Gackt.
Lyrics: Shoko Fujibayashi
Composition: Ryo (of defspiral)
Arrangement: Kotaro Nakagawa, Ryo, (Nippon Columbia Version: Yasumasa Satou), (Nippon Crown Version: Mitsuhiro Nagano), (Rider Chips Version: Cher Watanabe)
Artist: Gackt, (Nippon Columbia Version: Hiroaki Takeuchi), (Nippon Crown Version: Shinichi Ishihara), Rider Chips
Episodes: Nine Worlds arc (first verse), New Worlds arc (second verse)
