Kamen Raidâ × Kamen Raidâ Gôsuto ando Doraibu Chô Mûbî Taisen Jeneshisu

Three months after the Roidmude threat has ended, Takeru and Shinnosuke are sent back 10 years into the past, where Shinnosuke encounters Mr. Belt before they had originally met while Takeru finds his father before he passed away.