• "Touken Ranbu Kai Douden" is a prequel film to the popular "Touken Ranbu" franchise. The film will focus on the origins and backstories of the swords and sword warriors featured in the series. It is set to premiere in Japan on September 9, 2023.

• The film will explore how the swords and sword warriors came to be and the events that led to their recruitment by the Historical Revisionists. This will provide deeper insight into the characters and their motivations within the overall "Touken Ranbu" storyline.

• The announcement of "Touken Ranbu Kai Douden" has generated excitement among fans of the franchise, who are eager to learn more about the origins of their favorite sword warriors. The prequel film is expected to offer a fresh perspective and expand the lore of the "Touken Ranbu" universe.