Kamen Rider Den-O: Singing, Dancing, Great Training!!

Taking place between episodes 44 and 45, Kamen Rider Den-O: Singing, Dancing, Great Training!! (仮面ライダー電王 うたって、おどって、大とっくん!! Kamen Raidā Den'ō: Utatte, Odotte, Daitokkun!!?) is a series of exercises that Ryotaro Nogami, Kohana, Momotaros, Urataros, Kintaros, Ryutaros, Deneb, and Sieg join in to get Ryotaro into shape so he can fight. But when the additional help (the Spider Imagin, the Wolf Imagin, and Ari the Anthopper Imagin) go rogue, Ryotaro becomes Kamen Rider Den-O Liner Form to use his training against the evil Imagin.