The September issue of Akita Shoten's Bessatsu Shōnen Champion magazine announced on August 12 that manga creator Morishige will publish the final chapter of his Sakura Sakura manga in the magazine's next issue, which Akita Shoten will publish on September 12.

The "ultra-extreme declining-birthrate (kinda science-fiction?) romantic comedy" centers around Haru Hanasaki, a boy who is turning 15 in a Japan where the drop in childbirths has reached critical levels. He is entering high school, where he will have a classmate for the first time in his entire life.

Morishige launched the manga in the first issue of Bessatsu Shōnen Champion in June 2012. Akita Shoten published the manga's seventh compiled book volume on July 8.

Morishige also created the popular Hanaukyo Maid Team and Koi Koi Seven romantic comedy manga — both of which have been animated. I.C. Entertainment (Studio Ironcat) published the Hanaukyo Maid Team manga in North America, and Geneon Entertainment released the Hanaukyo Maid Team: La Verite television series. Enoki Films streamed the Koi Koi Seven anime on several services in North America.