Kamen Rider Ghost: Legendary! Riders' Souls! is a web-exclusive series of Kamen Rider Ghost, which was released on TOEI's official YouTube channel to commemorate the 45th anniversary of the Kamen Rider Series. Installments for each of Ghost's six Heisei Kamen Rider Series Phase 2 predecessors. Episodes were released each Friday every 2 weeks, up to the day before the premiere of the 45th anniversary movie, Kamen Rider 1.