This not-so unlikely collaboration between two series written by writers known for killing off beloved characters is the result of an ad campaign to promote both the upcoming Madoka Magica: The Rebellion Story movie as well as the release of the Nekomonogatari (Shiro) DVD/ BluRay.
These digital ads were placed in both Shinjuku station and in Akihabara. Made by ad company J · AD Vision, they change screens every 15 seconds showing a different image every time. The first screen shows the Madoka ad as well a super deformed Karen Araragi, the second screen shows the Monogatari ad and a super deformed Tsukihi Araragi and the third screen shows both series as well as the super deformed versions of the fire sisters Tsukihi and Karen Araragi, Sayaka Miki and Kyuubey.
The ads seen below are seen near the east exit of Shinjuku station.
The Nekomonogatari (Shiro) DVD/BluRay will be released on October 23, 2013 while the third Madoka movie, The Rebellion Story will hit Japanese cinemas on October 26, 2013.