The previous Sumikko Gurashi film, Eiga Sumikko Gurashi: Tobidasu Eihon to Himitsu no Ko (“Sumikko Gurashi the Movie: The Pop-Up Book and The Mystery Child”), was released in Japan in November of 2019.
Eiga Sumikko Gurashi: Tobidasu Eihon to Himitsu no Ko was a surprise hit with audiences, and it sold some 1.22 million tickets during its theatrical run.
The new film will hit Japanese theaters in 2021, and it features animation production by Fanworks and distribution by Asmik Ace.