Brought on by popularity for the series, this DVD Special feats. two half-hour side stories that take place during the events of the show. Both stories appear to take place just after episode 20, the first episode of the Helheim Saga. The Kamen Rider Zangetsu side story begins with Takatora telling Kota about the truth behind Helheim. While a childhood friend pays Takatora a visit, a mysterious Kamen Rider that has control over cracks begins to hunt down Yggdrasill’s forces. The Kamen Rider Baron side story begins with Kaito seeking out the Overlords for Professor Ryoma. A prince visits Zawame and when he finds out that Kaito looks exactly like him, he decides to forcefully switch lives, resulting in conflict.
小林豊
as Kaito Kumon / Kamen Rider Baron, Shapool
久保田悠来
as Takatora Kureshima / Kamen Rider Zangetsu
佐野岳
as Kouta Kazuraba / Kamen Rider Gaim
松田岳
as Zack / Kamen Rider Knuckle
吉田メタル
as Oren Pierre Alfonzo / Kamen Rider Bravo
河相我聞
as Alfred / Kamen Rider Tyrant
青木玄徳
as Ryoma Sengoku / Kamen Rider Duke
佃井皆美
as Yoko Minato / Kamen Rider Marika
岩田さゆり
as Touka Akatsuki / Kamen Rider Idunn
Ryuto Kaai
as Takatora Kureshima (child)
高杉真宙
as Mitsuzane Kureshima
Wataru Nishioka
as Mitsuzane Kureshima (child)
