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.
Tonoin Kei, a musical genius, becomes the new conductor of Fujimi, clashing with the group's leader, Morimura Yuuki, who is unaware of Kei's feelings for him.
Meiko and Taneda are a couple graduated from university two years ago. Unhappy with their lives, Meiko quits her job and encourages Taneda to have his band become professional.
Mei has been in love with Yuya all her life. They've grown up together. But when they reach their second year of middle school, Yuya suddenly professes his love for her older sister, Haruna.
High school student Kasumi Ogino is a member of the school choir and after years of praise for her singing voice thinks she is the absolute bee’s knees. When the object of her desires, classmate and photographer Junichi Makimura, asks Kasumi is he can photograph her singing she accepts, thinking this means she is beautiful as well. However the end result is a comical shot of Kasumi with her mouth wide open, which Makimura likes to a hungry salmon! Distraught by the ensuing humiliation, Kasumi quits the choir, until she is encouraged to return by an unlikely counsel - the brutish leader of thuggish rival all male choir, Hiroshi Gondo.