It is sometime in the future, where a certain European city extends far underground, even secret, dark levels that have the key to the past. Ex-assassin Mihai has returned and is living with Kiri, who now runs a restaurant. Sword-wielding Naoto, Haine (white hair), a mysterious product of genetic engineering and his sometime partner Badou (eyepatch).

On a normal afternoon, Doraemon's bell was stolen by Kaito Deluxe, a thief from the 22nd Century. Determined to get it back, Nobita and co. decides to pursue him and take back the bell that is hidden inside the 22nd Century's Secret Gadget Museum. (Source: ANN)

As Jun Sakurada fights and lives alongside the Rozen Maidens, special lifelike dolls made to battle each other, he enjoys a rare break in which he is told a story during the events of Rozen Maiden: Träumend. When Jun buys a brooch as a present for Shinku, the fifth doll, she refuses to accept it at any cost. Souseiseki, the fourth doll, then recounts the story of how Shinku and the first doll, Suigintou, first met. This tale tells of the cruel and heartbreaking circumstances surrounding Suigintou's birth, and how the many misunderstandings between her and Shinku shaped their longstanding rivalry fueled by Suigintou's unfettered hate towards Shinku. The stage is set in Rozen Maiden: Ouvertüre in 19th century London as the story delves into the past of these one-time friends and the secrets that they hold. [Written by MAL Rewrite]

Alongside Yamato, Momonosuke Kozuki recounts the great adventures of his father Oden—a renowned daimyo revered throughout the Land of Wano. From the days of Oden's youth to his last moments of glory, Momonosuke comes to understand the hardships and personal growth that his father experienced to eventually become the man he was.